Edwin remembers driving through Glenns Ferry on a family trip
and seeing a roadside sign pointing out large rocks that were petrified
watermelons. His son Bill told him the
rocks were left behind by the glaciers.
(1937 Edwin, Evelyn, Elaine, and William Keith Perkins)
From www.hugefloods.com
Melon Gravels.....As the water ripped through narrow reaches of the Snake's (River) canyon, it dislodged large basalt boulders and tumbled them downstream. Within a few miles these boulders had been rounded with diameters ranging from three feet to ten feet. These remnants were given the name melon gravels after geologists observed a billboard that advertised one patch of boulders as "petrified watermelons."
