Rock River
Pop. 235 Elev. 6,892

This railroad town once thrived after the Rock Creek Station (now Arlington) was closed in 1900. Some accounts say it was the same community, just moved downstream. Como Bluff, just northwest of Rock River on Hwy. 30, is one of the most significant paleontological sites in the world, where diplodocus fossils, the largest animal ever known, were first found.
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