Best Skylights
Updated Daily
Top Ranked
Best
1
Raufarhólshellir is a remarkable Icelandic lava tube formed by ancient basaltic flows. Its notable feature is extensive skylights revealing the cave’s complex internal structure and unique geological formations within the Leitahraun area. Primarily explored for scientific research into Iceland's vol...
2
Four Windows Cave is a prominent lava tube within New Mexico's El Malpais National Monument, named for its multiple ceiling collapse skylights.
You've reached the end — 2 items
