How do V- shaped valleys form?

You can transform a v-shaped valley into a u-shaped valley by a glacier.

they are the cause of years of erosion... and gravity pushing down apon mountians.... srry cant make long answer gtg

yes indeed. the can because due to all the eruptions the u shaped valley gets those round stones smoothed out and forms a v shaped valley

V Shapes Valleys Are Formed By Water Eroding Away The Rocks, Mud And Stone On The Mountain Side.