Black Chasm Cavern
A National Natural Landmark in Volcano, California, known for its rare and delicate helictite crystal formations, unique cave-dwelling creatures, and guided walking tours.

📜 Dissolution cave with rare helictite crystals and unique subterranean life.
🔍 Declared a National Natural Landmark in 1976.

Why Go

💎 See millions of sparkling helictite crystals
🚶 Explore on a guided walking tour with modern stairs and lighting
🌡️ Enjoy a stable 58-degree Fahrenheit temperature year-round
🛍️ Visit a gift shop and museum with Gold Rush artifacts
⛏️ Try gemstone mining and gold panning above ground

Why Avoid

⚠️ Limited phone service in surrounding areas

Tips

👟 Wear suitable walking shoes and dress for the chill
⏰ Arrive 30 minutes before your scheduled tour

Hours

🕒 Open Friday-Sunday 10 AM - 4 PM; extended hours for summer and holidays. Closed Thanksgiving Day.

Activities

🚶 Self-guided nature hike on the Miners Trail or Zen Nature Trail
🧺 Picnic tables available

Last updated 6 days ago

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