Historical photo, Oregon Caves National Monument & Preserve, 2016.
Summary
Visitors used to tour the cave with carbide lanterns and the jumpsuits you see here. Electric lights were installed in 1933 and the carbide lanterns were discontinued. Unfortunately, these lanterns had left residue on the cave ceilings; it has since been washed away. Today the park uses candle lanterns that leave behind minimal residue in the cave.
Tags
Date
1933
Source
National Parks Gallery
Copyright info
Public Domain Dedication