Underground travels

The continuation is here

Adventures of Moscow cavers in Leningrad region
part one
 
The outside view of Rumbolovskaya hill.   Here is how it looks from the inside...
  This part of the gallery has been made by the cavers in order to access the rest. At least about it we really know who made it, when and for what purpose.  
 
Get inside
Rozhdesveno. The "Saint" cave.  
Moving on...
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Petrovskaya quarry.
Please note the exceptional quality of the ceiling...

  Petrovskaya. Paul lights the passage into the distant part.

The continuation is here

Underground travels