This snow tunnel near the Mutnovsky Volcano
in Russia is almost a kilometre long.
These tunnels form under the snow fields
in deep ravines at the end of the summer thaw.
Meltwater flows through glaciers
towards lower elevations,
finding an outlet at the terminus of the glacier
and carving the ice on the way.
The Mutnovsky Volcano is found in the
southern part of the Kamchatka Peninsula.
The photo of the snow tunnel was taken
with three light sources:
- a torch
- flash
- natural light from the exit
holding for 2 seconds.
Photo credit: Michael Zelensky
Source was:
http://www.photokamchatka.ru/photos/photo.php?ID=9225
Now defunct.
https://mntviews.blogspot.com/
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