description Subway Cave Overview
Subway Cave is a subterranean lava tube located in the Lassen National Forest in Northern California, formed approximately 20,000 years ago by the cooling Hat Creek basalt flow. The cave is distinguished by its accessible, self-guided walk-through trail, which allows visitors to experience its dark, raw volcanic rock formations. It is maintained by the US Forest Service for hikers and casual tourists interested in geological exploration.
help Subway Cave FAQ
Where exactly is Subway Cave located?
Subway Cave is a subterranean lava tube located within the Lassen National Forest in northern California. It is situated near the town of Old Station and the Hat Creek Rim.
How was Subway Cave formed?
The cave was formed by ancient volcanic activity roughly 20,000 years ago. It was created when the surface of a massive Hat Creek basalt flow cooled and hardened, while the molten lava beneath continued flowing, leaving a hollow tube behind.
Do you need special equipment to explore Subway Cave?
Yes, because it is an undeveloped natural feature, there is no artificial lighting inside the cave. Visitors are required to bring their own flashlights or lanterns, and they are also advised to wear sturdy shoes and warm clothing due to the cold, dark interior.
How long is the walk through Subway Cave?
The walk through the lava tube is self-guided and relatively short, with the main passage measuring about 1,300 feet long. The floor is uneven and the ceiling is low in places, but it remains an easy, family-friendly hike for most visitors.
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