1) Geologic formation of Poland
Found on
https://www.crosswordclues.com/clue/rotliegend
The Rotliegend or Rotliegendes (the underlying red) is a lithostratigraphic unit (a sequence of rock strata) of Cisuralian (early Permian) age that is found in the subsurface of large areas in western and central Europe. The Rotliegend mainly consists of sandstone layers. It is usually covered by the Zechstein and lies on top of regionally differe...
Found on
http://en.wikipedia.org/wiki/Rotliegend
No exact match found.
