I visit a lot of steep potentially unstable slopes for my work. Yesterday was a day of seeing very recent landslides and one in action.
When I arrived at my first site, I noted a couple of city workers down the street from my location. A couple of boulders had come loose and landed on the city street below.
After a late afternoon site visit to another site, I ended the day taking a hike along a shore reach I had not previously visited on Whidbey Island. I heard some deep thumping noises that sounded like artillery. While Whidbey Island is known for loud noise ("the sound of freedom" from the jets at the naval airbase), this was not a sound I had heard before.
It got louder as I headed north and then I saw the source:
However, the till does weather and becomes soft with water. When I walked over the toe of the area of collapsed blocks of till I encountered very fluid mud.
The source of water and the calving process were fairly evident on this wet day. Water has been flowing behind the dialation cracks on the till bluff face. Not a surprise given the amount of rain.
On my way back I took a picture in the dim light of a hanging bit of till on the bluff face.