Subway Cave Lava Tubes

Subway Cave offers an underground trail through an ancient volcanic lava tube completely engulfed in total darkness. The cave's interior remains a brisk 46 degrees Fahrenheit year-round, making warm clothing and a proper flashlight essential for visitors.

Commenters strongly reinforce that a powerful flashlight is mandatory, warning that relying solely on a smartphone light can leave you overwhelmed by the extreme darkness. Overall feedback describes the cave as an exciting adventure, with some visitors noting adjacent fenced-off areas.