Mammoth Lakes, and the surrounding Eastern Sierra, is an otherworldly adventureland worth protecting for future generations to experience. When you plan to visit, make a promise to treat Mammoth Lakes as if it were your own backyard, and hey, maybe leave it even better than you found it.
Your first step towards more responsible recreation can be as simple as reading and signing the Mammoth Lakes Promise to ensure that everyone can experience our infinite moments of wonder for years to come.
SIGN THE MAMMOTH LAKES PROMISE
