Crater Lake lies in the caldera of Mount Mazama formed 7,700 years ago after an eruption. It is the deepest lake in the United States and is known for its blue color and water clarity. There are two islands in the lake, and, with no inlets or outlets, all water comes through precipitation.
Trail is quite short, but doable even if Rim Drive is closed. It's a bit of a jog walking along the road from North Junction, but the turnouts along the way (and easy off-road treks to the top of the rim from the road) leave you with plenty to look at along the way. Make sure to take your time at the bottom of the trail before heading back up, the solitude of the lake up-close is unparalleled.
Did this hike in a boot with a stress fracture. Cliff jumping was a blast and the water actually is refreshing on a cold day. Really cool to see the true blue of the lake up close, would definitely recommend everyone to do cliff jumping. It's a can't miss.
Hiked this trail while camping at Mazama. What a beautiful hike down into this amazing canyon. The strong smell of evergreens and fresh air is something I will always remember. Stop and dip your toes in the freezing creek in the summer months.