The volcanic crater lake attracts thousands of visitors each year. Those wanting to enjoy the deepest lake in the U.S. will need to schedule a visit soon, before access closes for more than two years.

Crater Lake National Park, formed from the now-collapsed volcano Mount Mazama, is a must-see destination in Oregon. Visitors can enjoy over 100 miles of hiking trails, scenic overlooks, and boat tours ...

Crater Lake was formed more than 7,000 years ago when the ancient volcano Mount Mazama erupted and collapsed, leaving the massive depression. "That crater gradually collected rain and melting snow ...

Why it's incredible: The lake is the only place on Earth that's similar to Jezero crater on Mars ... that look similar to coral reefs but are made of microbes. The lake still hosts intact ...