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Sand Hoodoos on a Lake Michigan Beach

Hoodoos are usually formed when sandstone or other soft rock is eroded by rain and/or wind. They are generally associated with hot dry locations, but these hoodoos were found on a Lake Michigan beach on a very cold day. These curious structures were formed when frozen water cemented sand grains together, then strong winds weathered and eroded some of the sand away. Unlike their desert cousins, these sculpted forms don't last very long. When the temperature is warm enough to melt the ice holding them together, the hoodoos rapidly return the sand to the beach.

Image Credit: Troy Horvath