::::::::::: No, the [[Grand Canyon]] is not the shape of a slowly eroded valley. It's the shape of a suddenly collapsed ocean floor.--[[User:Aschlafly|Andy Schlafly]] 16:28, 13 August 2011 (EDT) | ::::::::::: No, the [[Grand Canyon]] is not the shape of a slowly eroded valley. It's the shape of a suddenly collapsed ocean floor.--[[User:Aschlafly|Andy Schlafly]] 16:28, 13 August 2011 (EDT) |