This are some sort of petroleum, I found them in zandvoort. I also recognized several shells darkened. Can some one help me understand what is this doing in the water? And what is this? I wouldn’t mind some history.

5 comments
  1. It’s just one of those moments you find petroleum and turn into a trillionaire a decade later.

    By the way…are you hiring?

  2. as a todler playing on the beach I put anything in my mouth. I really liked to chew on these stones. Im so glad adults know how spice up the world

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