Download or read book Under Grotto Mountain written by Charles J. Yonge and published by Rocky Mountain Books Ltd. This book was released on 2001 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Named a Provincial Historic Site in 1986, Rat's Nest Cave near Canmore, Alberta, extends for approximately 4 km beneath Grotto Mountain. This new cave guide not only examines the natural history of this fascinating system of subterranean passageways, but also explores 2000-3000 years of human occupation.