Pro Guiding Service
Domestic & International Trips & Courses with Professionally Trained Mountain Guides

PGS Guides

Our guides are highly qualified and professionally trained.  This means that they are involved in an internationally accredited certification program. The UIAGM (Union Internationale des Associations de Guides de Montagnes) and the AMGA (American Mountain Guides Association) run internationally recognized certification programs for aspiring mountain guides. Pro Guiding Service abides by the AMGA Scope of Practice. This document creates terrain guidelines for aspiring guides. By following these guidelines, our guests will have an assurance that their guide will be operating in the proper terrain. 
It requires three to four years of intense training, testing, and supervised guiding to become fully certified. For more information about UIAGM and AMGA qualifications, check the AMGA home page at

Martin Volken

Founder, Owner, & IFMGA Guide

Martin is the founder and owner of Pro Ski and Mountain Service and Pro Guiding Service and is an IFMGA certified Swiss Mountain Guide. He was born and raised in Switzerland in the village of Stalden outside Zermatt. This is where he received his formal training as a Swiss Mountain Guide. Martin moved to the Seattle area in the late 1980's. He worked as an instructor/examiner for the AMGA ski mountaineering program. Martin guides all facets of mountaineering. He has authored and co-authored several books on backcountry skiing and he was the recipient of the AMGA life time achievement award for mountain guiding in 2016.

Forest McBrian

Lead Guide

Forest is an IFMGA Certified Mountain Guide based in Seattle. He grew up in Oregon where he began wandering in the mountains at a young age, and discovered mountaineering in Chamonix when he was 17 years old. Forest holds a BA in English and French and works full-time, year-round as a mountain guide. In his spare time he explores new ski traverses, ski descents, and alpine routes in the Cascade mountains.

Aaron Richards

Lead Guide

Aaron has been guiding and instructing since 2010. He is now an IFMGA guide, and an AIARE avalanche course leader. He went to Oregon State University where he got a bachelor’s degree in botany. Newly returned to the Pacific Northwest after six years’ guiding in California’s Eastern Sierra, he’s looking forward to the deep Washington snowpack and quick access to his Canadian homeland.

Abigail Westling


Abby grew up in Olympia, Washington where she grew to love the outdoors of her own backyard--the Cascades, the Olympic mountains, and Puget Sound. She skied locally at White Pass, racing moguls and skiing freestyle. She ranged across the western states chasing powder with her family. Abby began guiding while finishing her degree in Outdoor Education from Western Colorado University, following her passion for helping others reach their goals in the outdoors. She now spends her summers guiding in Alaska and Washington and her winters teaching avalanche education courses. In her free time you’ll find her exploring the mountains, paddle boarding, hanging out with her cat Picket, or baking banana bread for her next adventure.

Doug Bernard


Skier, climber, adventurer, avalanche educator, military veteran, and currently pursuing training to become an AMGA/IFMGA guide, Doug began his lifelong love of adventuring and building friendships in the mountains at a young age in his hometown of Ketchum, Idaho. Working towards guide certification with his mentors in the guide community and at Pro Guiding Service has allowed Doug to turn his passion for teaching and sharing experiences in the mountains into a profession. Throughout his life, the mountains have always played an integral role in providing experiences and building friendships as Doug pursued challenge, mastery, stoke, and connection. Doug’s personal and professional work have allowed him the good fortune to ski and climb on five continents.  In his spare time, you can find him seeking out stoke in the mountains with friends.

Berndt Bittlingmaier


Berndt grew up skiing and snow camping with his family in Alaska. When he isn't climbing or skiing with his family, he enjoys taking time to share his love of outdoors with others. He has been guiding since 2015 and is an AMGA Single Pitch Instructor and Apprentice Alpine/Rock Guide. He has hiked, skied, climbed throughout North America and Europe. His favorite indoor activities include listening to his kids play the piano and watching reruns of the Office with Erin.

Rinaldo Borra


Rinaldo is a IFMGA certified Swiss mountain guide and guides in the Alps, Canada and the US in all facets of mountaineering. He currently lives in Grindelwald at the base of the Eiger Nord Wand.

I’ve been guiding for almost 30 years all around the Alps, taking care of three wild boys and hope to check out Martin’s new coffee machine at the shop in North Bend.

Alexa Cathcart

Originally from Washington, Alexa grew up playing in the Cascades. After college she hit the road for multiple years, backcountry skiing and rock climbing all over British Columbia, Wyoming, California and Oregon. She has been guiding since 2019 in Washington, California and Argentina. Alexa is an accomplished ski mountaineer, often challenging herself on long ski traverses and technical ski descents around the West. She is an AIARE Course Instructor, is pursuing AMGA Certification, and holds Wilderness First Responder and Leave No Trace certifications. She guides to share the joy of learning and mentorship with others. Among Alexa’s favorite things are big ski days fueled by even bigger cookies.

Alex Halliday


Alex grew up in the San Juan Islands of Washington where he had a passion for sailing and  being on the water. He studied outdoor recreation at Western Washington University and then traded it all in for the mountains and hasn't looked back. Alex has guided on the slopes of Mt Rainier, in the Alaska Range, and throughout the Cascades. He works in the mountains year round as a guide in the summer and a ski patroller at Stevens Pass in the winter. In his free time you will find him climbing and skiing in the mountains with friends or tinkering in the shop.

Ben Haskell


Ben has been with Pro Guiding Service since 1999. He achieved certification as an AMGA Ski Guide in 2001, and is also an AIARE Course Leader. Ben has a passion for the mountains of Washington state, which he shared as a contributing author of “Backcountry Ski and Snowboard Routes - Washington.” He has guided in British Columbia and Alaska as well. He lives in Seattle, where he also works as a firefighter/EMT.

Mike Hattrup


Mike is an AMGA certified ski mountaineering Guide and an aspiring AMGA alpine guide. He manages the K2 Telemark and Backcountry program and has starred in numerous ski films. Mike is a former mogul specialist on the US freestyle Ski Team.

Joe Hoch


Joe was born and raised in Washington, and although he's traveled and skied all over the western United States, Europe, and South America, the deep snowpack and steep skiing of the Washington Cascades keeps him coming back. Joe is an aspiring AMGA Ski Guide and an AIARE Instructor. He winters, ski guiding for Pro Guiding Service in the Alpental Valley, Crystal Mountain and the North Cascades, and summers on Mt. Rainier guiding for RMI. When he comes down from the hills he can typically be found in a wetsuit, cold, somewhere on the Washington coast.

Dave Jordan


Dave is an aspiring ski mountaineering guide and is pursuing AMGA certification. He grew up in the northwest and lives in North Bend, Washington. He learned to ski and climb in the cascades and spends his time exploring new ski descents and climbing routes.

Joe Kinner


Joe grew up in the Snoqualmie Valley. His introduction to the outdoors was through skiing at Alpental and exploring the forests and rivers of the valley. When Joe was 8 years old, he did the Kids Rock Camp with PGS where he first experienced climbing. It wasn’t until his college years in Montana that he started climbing regularly. He enjoys all mountain pursuits, from desert rock climbing to snowy alpine climbing. Some of his favorite places to explore are: the Cascades of Washington, the Wind Rivers in Wyoming, the San Juans of Colorado, and the Alaska Range. Joe has been Guiding/Instructing since 2019 and is pursuing AMGA Certification. He is also an AIARE Instructor. Joe’s super power is the ability to make large amounts of food disappear, especially sweets.

Trevor Kostanich


Trevor is an AMGA Certified Ski Guide and AIARE Level 1 & 2 Course Leader. Trevor is a native Washingtonian who loves exploring snowy mountains. He utilized a civil engineering degree to land a career and home on Snoqualmie Pass. When not ski touring in his backyard, he has spent long periods of time ski mountaineering in India, Alaska, Canada, New Zealand, and Argentina.

Craig Muderlak


Craig has worked in the outdoor industry for over 20 years. Beginning as a National Outdoor Leadership School (NOLS) instructor where he accrued over 100 weeks in the field, Craig is passionate about helping others foster deep and meaningful connections to wilderness. From a 40 day canoe expedition in Australia to climbing unnamed peaks in Alaska, Craig's penchant for adventure has taken him to some unique places. He is a recipient of the American Alpine Club, Copp-Dash Inspire Award and the Gor-tex Shipton-Tilman grant for his expedition to the remote Neacola Range of Alaska where he established multiple first-ascents, traveling on handmade wooden skis and pack-rafting 70 miles to the ocean. Throughout his guiding career, Craig has continued to merge his artistic and outdoor passions. In 2017, Craig assisted a paraplegic climber ascend El Capitan, and produced an award winning film telling the story. Craig is also a proud father, runs a small art business ( and regularly carries art supplies into the mountains.

Dan Peck


Dan Grew up in the Wasatch Mountains and has been skiing since he was 7 years old. He took up backcountry telemark skiing when he was 13 and has embraced the snowy mountains ever since. With over 30 years of backcountry skiing experience under his belt he loves long, high ski traverses in the North Cascades and British Columbia. He thrives in snowy and cold alpine environments. Dan gradually got into Alpinism and Rock Climbing over the years, and these tools have combined to make him a strong and smart mountain traveler. Dan is an AMGA certified ski guide and lives in Poulsbo with his wife, 2 daughters, 2 sons, and a fluffy dog.

Eddie Schoen


Eddie is an IFMGA / American Mountain Guide with a problematic dependency on good coffee and pizza. From Denali to Hokkaido, he loves to share the amazing breadth of experiences across rock, snow, and ice that the world’s mountains offer up. Having worked in the Tetons, Colorado’s Front Range, Japan, and Alaska, no place has captured his love and imagination quite like Washington’s Cascades. The art of moving through the mountains is a life-long pursuit, and Eddie loves sharing what he has learned so far with each and every guest no matter the medium.

Matt Stahlberg


Matt Stahlberg grew up in Santa Cruz California where his love for the mountains started as a young child exploring the Sierras around Lake Tahoe. He has lived in the Northwest for 12 years and is an aspiring split board mountaineer pursuing AMGA certification.

Josh Stuart


Josh is an apprentice alpine guide and AMGA Single Pitch (rock climbing) Instructor. Born and raised in Washington, for the last 20 years he’s been mountain climbing, and periodically guiding, and volunteering for mountain rescue.
When he’s not guiding, you’ll still find him outside. His favorite activity is peak bagging, but you’ll also find him trail running, mountain biking, kayaking, SUP’ing, or surfing. Josh loves to explore the mountains and to share it with others. He says that when he takes people on a trip, it’s like he gets to see places for the first time again, through their eyes. He believes that being in the mountains forces presence. It makes it easy to “be here now” and live in the current moment. That’s the reason he likes most to spend his time in the mountains and especially to share it with others.

Jeff Tarshis


Jeff grew up in the Northeast but his passion for mountain pursuits steered him to Colorado and ultimately to Washington in 2013. Jeff's first foray as a snow professional was at the Institute of Arctic and Alpine Research in 2010 while earning his Bachelor's degree from CU Boulder. He is a full time guide in ski, alpine and rock disciplines undergoing the credentialing process of AMGA (American Mountain Guide Association) Full Certification. His personal aspirations have taken him rock climbing, alpine climbing and skiing in various countries with a small handful of first ascents/descents in China and Canada. In his free time, he enjoys skiing and exploring the wild spaces Washington has to offer. Jeff loves to share his passion for skiing and climbing with others; especially while helping them achieve their mountain goals.

Seth Waterfall


Seth is an AMGA Certified Ski Guide and a Climbing Ranger at Mount Rainier National Park. His home base is in Enumclaw, WA but he's climbed and skied all over the world. He's skied from the summit of Denali and summited Mount Everest three times. Seth loves taking people out and showing off the amazing terrain that the Washington Cascades have to offer, especially at Snoqulamie Pass and in the Crystal Mountain Back Country.

Solveig Waterfall


Solveig is an AMGA certified Ski Mountaineering Guide. She was born and raised in the Alpental Valley of Washington State. She first clicked into ski bindings at less than a year old, and has been in hot pursuit of fresh snow ever since. Solveig started guiding while getting a BA from Western State College of Colorado, and has since worked in the Sierra's, the Cascades, the Alaska Range, and Internationally on the Mexican Volcanoes and Argentina's Aconcagua. Personal climbing and skiing aspirations have taken her to Sikkim in the Indian Himalaya, and the Waddington Range in British Columbia. After five years of ski patrolling in the winter months, Solveig now guides full time for both Pro Guiding and Rainier Mountaineering Inc. in Ashford, WA. She spends the winter months teaching avalanche education courses and leading backcountry skiing seminars. She has 70 summits of Mount Rainier via 5 routes, and has worked 3 expeditions to Denali.

Guiding Office Administration

Jodi Laakso

Guiding Office Operations Manager

Jodi grew up in the frozen north of Minnesota and has now lived in the North Bend area for over 25 years. After earning undergraduate and graduate degrees in Iowa, she started her move west doing postdoctoral research at the University of Utah in Salt Lake City. Her westward march continued with multiple biotech jobs in the Puget Sound area. Although her educational background is organic chemistry, she has worked most recently managing the ski and bike shop at the Issaquah REI store. All things snow interest her, but backcountry and Nordic skiing top the list. She tolerates summer by cycling, hiking, backpacking, and occasionally tubing the Middle Fork!

Gina Volken


Gina is Martin Volken's wife, so aside from having to put up with him, she handles much of the administrative work for both Pro Ski and Mountain Service and Pro Guiding Service. She also works together with the office staff to help ensure our trips and courses run smoothly.


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