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Pro Guiding Service
Domestic & International Trips & Courses with Certified Mountain Guides

PGS Guides

Our guides are highly qualified and will be 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.

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.

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.

Jack Bynum


Jack has 10 years of experience guiding backcountry trips around the world. He has traveled over 20,000 miles by bike, sea kayak, foot, raft, and skis, become the youngest person to solo Denali and has put up first ascents on 6,000 meter peaks in the Himalayas. In 2016 his solo ascent of Bhandar Lek was listed as one of 20 most significant global ascents of the year by the prestigious Piloet d’Or. He calls Seattle home, but is often around the world leading trips or on personal adventures. His favorite place to guide is the Wrangell Mountains or any custom trip to a new place!

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.

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 is an aspiring mountain guide in the process of AMGA certification. He 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. His personal aspirations have taken him rock and alpine climbing 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.

Mark Orzech

Ski Instructor

Mark grew up skiing and ski racing in the Alps. In 1988 he became a certified ski instructor for the German Ski Association (DSV) and since then Mark has a deep passion for helping other skiers develop their skills and build up their confidence. He is also a part of the Summit at Snoqualmie volunteer ski patrol and a master boot fitter (among many other skills) at Pro Ski and Mountain Service. When he is not cruising around patrolling the mountain, or boot fitting at Pro Ski, he enjoys heading to Alpental with our Pro Guiding Service guests to better prepare them for backcountry skiing.

Guiding Office Administration

Gina Volken

Owner & Guiding Office Manager

Gina is Martin Volken's wife, so aside from having to put up with him, she handles the administrative work for both Pro Ski and Mountain Service (our retail store) and Pro Guiding Service and is the office manager for Pro Guiding Service. She enjoys working with our guides and clients and can answer just about any questions you have about our trips and courses. She often has the opportunity to join in on those trips and courses, so she can speak from experience.

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!


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