Meet Our Guides

Meet Our Guides

Josh Helling

YMS guide since 1993. Certified AMGA rock guide, certified PSIA Nordic ski instructor, Rigging For Rescue certified. More than 26 ascents of El Capitan, and 70+ big wall climbs. 1st ascent big wall expedition climbs in Greenland, Baffin Island, Antarctica, Morocco, & Socotra Island Yemen. Many alpine ascents, and ice climbs. Professional photographer, videographer, and film rigger. Active member of Yosemite Search & Rescue.

Nate Kerr

YMS climbing guide since 2007. AMGA Certified Rock Guide. Former Pacific Crest Outward Bound School Instructor, avid climber and backcountry skier, pursuing further AMGA certification. Yosemite Cross-Country ski guide.

Mark Grundon

YMS guide since 2009.  AMGA Certified Rock Guide.  Mark has been climbing for 12 years and has 5 El Cap ascents.  He has guided in Colorado, Alaska, Mexico, and Nepal. Mark is a strong believer in “living the dream”, and following your passions whatever they may be.  He currently guides in El Potrero Chico in Mexico in the winter.  Mark also has an EMT certification, a Leave No Trace Trainer certification, and a B.A. in Recreation and Environmental Studies.

Aaron Jones

Climbing since 2001, in Yosemite since 2003.  Aaron is an AMGA certified Rock Guide. Accomplishments include 40 ascents of El Capitan and over 70+ big wall ascents. Solo ascents of Nose on El Cap in 20 hours and Zodiac route in under 13 hours. Extensive alpine experience including solo ascents of Torres del Paine in Chile.

Miranda Oakley

Miranda has been living, working and playing in Yosemite National Park since 2006. She is an AMGA certified guide. She has worked as a guide for an international outdoor recreation company based in China. She has traveled and climbed extensively throughout the United States, Asia, South and Central America and Spain. She earned a B.A. in International Studies with a focus in Latin America and Spanish Language. Miranda loves the backcountry of the Sierra Nevada and shares her knowledge and enthusiasm for the outdoors with her clients.

Josh McClure

Josh is a certified AMGA rock guide and has been a Yosemite Mountaineering School guide since 2006.  Josh has been climbing for 17 years.  Accomplishments include 30+ ascents of both El Capitan and Half Dome, and more than 100 big wall ascents.  Solo day ascents of The Nose on El Cap 19:30 and the Regular N.W. Face of Half dome 6:00. Day link ups of Half Dome and El Cap 17:20. Josh has extensive alpine experience including ascents of Aconcagua, Fitz Roy, first ascent big wall free climbs and first solo link ups in Patagonia’s Fitz Roy range.  Josh has also climbed and trekked in many of the world’s mountain ranges including, the Himalayas, the Andes, the Atlas, the Pyrenees, the Sierras and the Rockies. Certifications include: B.S. Natural Resources Management, Certified Interpretive Guide through National Association of Interpretation and Current Wilderness First Responder.

Paul Koubek

Paul is an IFMGA certified American Mountain Guide with extensive international guiding experience who began guiding in 1996. El Capitan guide with many one - day ascents of El Cap to his name. Former Yosemite Search And Rescue (YOSAR) Valley team member. Denali Lead Guide (10 summits) also Lead Guide on Rainier (10 summits in 10 attempts while guiding in 2018). Lead Guide on Aconcogua and Carstensz Pyramid. Works for U.S. Antarctic Program as mountaineer and Search And Rescue team member. Graduate: Search And Rescue Institute of New Zealand (SARINZ) vertical rescue training. Has guided and climbed in Alaska, India, Patagonia, Thailand, Mexico, New Zealand, Canada, Antarctica - significant Antarctic traverse experience (4000+ miles). Paul currently serves as an elected member of the Board of Directors for the American Mountain Guide's Association. Wilderness First Responder and Leave No Trace Trainer certifications, as well as AMGA certified Rock, Alpine and Ski guide.

Greg Coit

YMS guide since 2011, Greg spends his time backpacking, skiing, and mostly rock climbing with multiple ascents of El Capitan, Half Dome, and walls big and small all across Yosemite and the US. Greg has a bachelors degree in Outdoor Education from the University of New Hampshire; is a graduate from the National Outdoor Leadership School; and has guided rock climbing and backpacking in New England, North Carolina, Washington, and now Yosemite. Greg is a Wilderness First Responder, Leave No Trace Master Educator, and is currently on track to become an AMGA certified rock guide.

Allen Higginbotham

Allen climbed his first Yosemite big wall in 2005. Since then he has made ascends on all Yosemite's major walls, but his main passion is teaching. His dedication to sharing his knowledge and helping new climbers improve their skills, and mentoring skilled climbers, is why he loves working for Yosemite Mountaineering School. 

James Gustafson

Born and raised in Alaska, which gave James a great appreciation for the outdoors. He’s been guiding since 2011 in Alaska, Colorado, Utah, Nevada and California. His favorite type of climbing is long alpine rock objectives. In the off season he can be found traveling around the US, guiding rock and ice climbing or spending his personal time in the Mountains.

Kyle Rott

Kyle started guiding for YMS in 2017. He really enjoys all aspects of climbing, including mountaineering, ice climbing, rock climbing, and Big Wall climbing. He has climbed many of Yosemite’s classic Big Walls. Kyle started guiding ice in Montana in 2010, and still guides there in the winters.

Camden Clements

Rock climbing since 2001, YMS guide since 2017. Camden is originally from South Carolina and quit his job as a software developer in 2014 to hit the road and enjoy rock climbing around the US and the world. Camden enjoys climbing on Yosemite's big walls like El Capitan but also enjoys other types of climbing like sport climbing, bouldering, mountaineering. He has had a passion for climbing just about anything for a long time and enjoys helping others realize and achieve their climbing goals as well. He is tall and patient and enjoys bike rides, ice cream, and untangling ropes. Camden is Wilderness First Responder certified and has at least one speed record on El Capitan.

Jake Ramsey

Jake’s background in rock climbing began in the state of Colorado. As an avid ice climber, and skier he explored the Rocky Mountain Range. Climbing sandstone, limestone, and granite inspired Jake to move to Yosemite National Park in 2015. Amongst the granite giants he could focus on long aid routes, difficult free climbs, and Yosemite big walls. Climbing multiple ascents of El Capitan, and Half Dome kept Jake busy while working as backpacking, and hiking guide where he helped park visitors explore the High Sierra on foot. In 2016 Jake became a Yosemite Mountaineering School climbing instructor, and climbing guide. Jake is a Certified AMGA Rock Guide.

Nick Malik

Nick has been guiding since 2012 across North America. He is an AMGA Certified Rock Guide, LNT Master Educator, AMGA Assistant Ski Guide, AMGA Apprentice Alpine Guide, and Avalanche level 3 certified. Nick spends winters ski guiding in Jackson Hole and climbs in the desert during his time off. He has climbed over 600 days in Indian Creek including the establishment of many new routes. His climbing resume includes numerous free ascents of 5.13 cracks, onsighting up to 5.12+ trad, and many one day ascents of El Capitan. BS Cellular & Molecular Biology.