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  • large glacial boulder
    2386

  • fossil hunter in Messel
    2370

  • Sand deposits from glacial times
    2337

  • birdcliff on island Helgoland
    2306

  • algees in hotspring Yellow stone NP
    2222

  • chalk cliff on island Møn
    1866

  • chalk with flint
    1865

  • Continental deep drilling
    1815

  • erratic boulders in Baltic
    1720

  • ice age boulder in Baltic sea
    1669

  • 1618

  • 1617

  • basalt
    1591

  • dinosaur tracks
    1505
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© Polarfoto Dr. Hinrich Bäsemann