More linkspam ...

More links to photo posts from fishki.net - again, note that while the main article photos are ok, some of the ads on the left-hand side are NSFW.

• Tunnels, possibly from the Moscow metro system ?
  
• A very big hole in the ground - looks like one of those surprise mine-shaft collapse things
  
• Bird, meet plane. Plane, meet bird. Ouch (for both).
  
• Postcards of Moscow from 1890 or so.
  
• How to drain a dam - open a very big plughole
  
• Finally, weird but neat building, consisting of a jumble of connected blocks.