monumental erosion

so these are some older pictures because I didn't have time to go out anywhere this week. I grew up about 45 minutes from Yosemite, so these pictures are from a sunrise trip I took with some friends in June of 2019. 

 

left to right, this picture is my friends Makayla, Dalton, and then myself. we were at the base of one of the falls, I can't remember which one. Vernal maybe.

Yosemite Valley is what we can see today due to erosion from glaciers. the glaciers carved out the mountains and moved the rubble around with it (I assume. I wasn't there when the valley was formed)

I would assume that the Valley is still experiencing erosion now, but at a much smaller scale than when it was created as it is all exposed to the elements and weathering which can lead to erosion. I know there are still rockslides that happen in the park, as well as with the rivers and waterfalls. 

I know that erosion has occurred here as I remember being told that the Valley came to be because of glaciers, but also because mountains don't naturally form like Half Dome and El Capitan, with such sheer cliff faces. It's also evident in the boulders and rocks at the bases of the falls (like seen in the picture of me and my friends) and many of the bases of the mountains that likely came from the glacier reforming the mountains.