Halema`uma`u Crater Ringed by Remains of Old Lava Lake
![Halema`uma`u Crater Ringed by Remains of Old Lava Lake...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/vhp_img4693.jpg?itok=mPBgDslm)
Detailed Description
Red arrows point to the "bathtub ring," or high-lava mark, from the 1967-68 eruption in Halema'uma'u Crater. The light-colored ring, composed of rocks altered by acidic gases, is obscured in places by later rockslides from the unstable crater walls.