Mammoth Lakes, United States Mammoth Reservation Bureau proudly brings you Hidden Valley Condominiums. Nestled among tall pine trees, Hidden Valley is a treasure to Mammoth Lakes. A favorite place to stay among Mammoth Lakes Visitors, Hidden Valley is conveniently located near shopping, dining and is a quick shuttle bus ride to Canyon and Main Lodges. Not to mention, Cross Country Skiing right down the road! In the Summer, enjoy world-class golf in a spectacular setting with the new Sierra Star Golf Course a couple of blocks away! With spectacular views, tennis courts, a pool and a spa, Hidden Valley is the perfect choice for your vacation to Mammoth!