it s a journey that martin knows and alexander not slow embark on regularly there essentially professional time travelers here in the limestone alps they search for prehistoric fossils silent witnesses to the sea that once existed here. most of you seem to minister to these are remnants of the tech this ocean so this is a coral colony and has to do these are branches of coral cement why would you on here we have a cross section which is why they look round and see you and we think they were part of a small reefs a few meters in diameter and. all the rock in this section of the else was formed by organisms the limestone was produced by both corals and miniscule algae over the course of millions of years it built up on the seabed to form a three kilometer thick layer. when the african tectonic plate began
it s a journey that martin knows and alexander not slow embark on regularly they re essentially professional time travellers here in the limestone alps they search for prehistoric fossils silent witnesses to the sea that once existed here. was we re seeing some restored to these remnants of the tech this ocean use so this is a coral colony and has to do these are branches of coral cement why would you and here we have a cross section which is why they look round and see you and we think they were part of a small reefs a few meters in diameter and. all the rock in this section of the else was formed by organisms the limestone was produced by both corals and miniscule algae over the course of millions of years it built up on the seabed to form a three kilometer thick layer. when the african tectonic plate began to drift towards europe one hundred million years ago the seabed broke apart and