Giant mud puddles were once Lake Chewacan, a great inland sea

Summer Lake, Abert Lake and Goose Lake were once all part of a vast network of seas surrounded by lush vegetation. In dry years they can evaporate completely — which led to some confusion on the Applegate Trail one year. (Lake County) (For text and pictures, see https://offbeatoregon.com/1701c.alkali-abert-goose-lakes-426.html)