Steep-sided levee forms "perched" lava lake
![The lava lake's levee stands up to 8 m (26 ft) above the surroundin...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/vhp_img1855.jpg?itok=4oNIomCy)
Detailed Description
The lava lake's levee stands up to 8 m (26 ft) above the surrounding crater floor. This steep-sided levee impounds the lava and forms what is called a "perched" lava lake. Pieces of the rim occasionally collapse into the lake, leading to sudden and fast-moving overflows of lava onto the crater floor.