Most reviewed Geologic Formations in Iowa

  1. 4.5 Devonian Fossil Gorge (151 reviews)
    - A geologist's dream
    Friday: 6:00 AM - 10:00 PM Geologic Formations
    Devonian Fossil Gorge image
    The fossil gorge is essentially in the flow path of the auxiliary spillway of the dam that forms Coralville Lake. High flow has washed away the soil, exposing the sedimentary rock beneath, with lots of great fossils. Park in the shade and walk up to the entrance, where you'll find a nicely written brochure with interpretive stops, numbered 1-20. The numbers are little squares of metal (?) that have been affixed somehow to the rock, and some of them are missing - but it's fun to find the fossils that are described in the brochure. There are also some interesting small pools of water in the area that are almost like little oases, with fish even! Make sure to have a camera with you. See more..

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