If you’re between the ages of 18 and 25 and looking for a unique environmental internship, you need to act quickly because the Sierra Club’s Best Internship on Earth application deadline is March 31, 2010.

The applicant chosen for this position will be based out of San Francisco, Calif., but will travel the nation working with Sierra Club youth groups. A summer filled with outdoors fun, including rafting and hiking, a $2,500 stipend, and $2,000 worth of outdoors gear awaits the winner.

For more information on the application process, visit the Best Internship on Earth FAQ page.