AMG was founded in 1993 and is owned by Jon Tierney. AMG operates a year round program of courses and guiding that extends from the sea side cliffs of Acadia to distant summits in South America and Asia. The school is AMGA accredited and all guide staff have participated in either PCIA or AMGA guide training and certification. Jon is an IMFGA guide who has served on the AMGA Board of Directors and the AMGA Technical Committee and was formerly an AMGA Instructor/Examiner. Jon is the current Educational Director of the newly formed Professional Climbing Instructor's Association and was the original designer and catalyst behind of the AMGA Top Rope Site Manager (Single Pitch) program from 1997-2004.

During the summer, AMG operates primarily out of Bar Harbor, ME - home to Acadia National Park. Bar Harbor is a busy tourist town similar to North Conway, Estes Park, or Jackson Hole. The climbing is predominantly granite and Acadia is known for single pitch sea cliff climbing right over Frenchman's Bay. The 250' Southwall of Champlain Mountain features great corner lines on superb granite and is great terrain for introducing clients to multi-pitch climbing. Forty minutes inland are the Clifton Crags with steep sport climbing on granite. Alpine rock climbing on Katahdin is about 2.5 hours away. Both areas have excellent bouldering opportunities.  

Alpenglow Adventure Sports is a division of Acadia Mountain Guides, Inc. Alpenglow operates a retail store in Orono, ME a seasonal store in Bar Harbor, ME, and on-line at Alpenglowgear.com.