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|Monday, February 2, 2026Raufarhólshellir, Route 39 (Þrengslin), South Iceland
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Why Lava Tunnel Walls Show Color – Simple Science
A short explainer on mineral chemistry and lighting in Iceland’s Lava Tunnel.
12/10/2025
11 min read
Color Science
The Palette
- Iron oxides → reds and browns
- Manganese → dark tones
- Algae/moss → greens near openings
Light Angle & Moisture
Skylights create directional light that amplifies wet sheen or dry matte textures. Photography changes hour to hour.
Observe: Wipe a tiny wet patch (where allowed) — colors shift.
About the Author
Iceland Travel Expert
I put this guide together to make your Lava Tunnel day simple, insightful, and full of practical tips from the road.
Tags
Light
Minerals
Color
Iceland
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