Though many national parks don’t charge an entrance fee, taking a full-fledged vacation to one is rarely free. To celebrate National Park Week, which ends on April 25, plant-based protein company EVOLVE will award one lucky traveler $10,000 for the national park adventure of their dreams.

As Travel + Leisure reports, the sweepstakes is open to any U.S. resident who’s at least 18 years old, and it closes at 11:59 p.m. EST on May 31. You can enter on the website, or you can do it on Instagram or Twitter: Make sure you follow @DrinkEvolve, and then share a post that includes @DrinkEvolve, #GetOutsideWithEvolve, #Sweepstakes, and the name of the national park you’d visit with the prize money.

Even if you don’t end up winning $10,000, you might be lucky enough to walk away with a consolation prize. Fifty runners-up will each receive an “America the Beautiful” annual pass, granting you fee-free access to all national parks and federal recreational lands. And 100 other entrants will each win a case of EVOLVE’s plant-based protein shakes. EVOLVE is also donating $5000 to the National Park Foundation and rolling out new national park-inspired package designs.

“EVOLVE’s renewed commitment to the National Park Foundation will help protect parks and ensure that people see themselves and feel welcome in these places that belong to all of us,” Stefanie Mathew, the foundation’s senior vice president of corporate partnerships, said in a press release.

It’s never a bad idea to soak in the therapeutic effects of nature, but now’s an especially good time to do it in a national park—the National Park Service recently released a new app to help you make the most of any visit.

[h/t Travel + Leisure]