📜 A large lava tube formed by the Hat Creek basalt lava flow.
🔍 Dimensions range from 6 to 17 feet high and over 25 feet wide.
🚶 Easy walk through with no special equipment
🌡️ Cool 46°F temperature year-round
🪜 Concrete stairways at entrances
💡 No installed internal lights (bring your own)
🐾 No pets allowed
🥾 Hiking shoes are a must on ragged floor
🔦 Bring an electric lantern or headband lamp, plus a spare light
🧥 A jacket may be comfortable
🗓️ Open dawn to dusk, typically from late April
Large, well-marked parking area at trailhead.
Last updated 1 day ago
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