Skylight in main Mother's Day tub
![photo of lava](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/20030613-1117_TO_large.jpg?itok=CX2y2aCX)
Detailed Description
Skylight in main Mother's Day tube not far below place where lava first enters the tube. Figures in distance are measuring flux of lava in tube using a VLF instrument.
Sources/Usage
Public Domain.