I missed the rain today and had a nice ride.
https://www.strava.com/activities/706977949
Here is an example of glacial quarrying at Wawayanda, it is a phenomenon that is responsible for the erosion and transportation of individual pieces of bedrock, especially large "joint blocks". As a glacier moves down a valley, friction causes the basal ice of the glacier to melt and infiltrate joints (cracks) in the bedrock. The freezing and thawing action of the ice enlarges, widens, or causes further cracks in the bedrock as it changes volume across the ice/water phase transition (a form of hydraulic wedging), gradually loosening the rock between the joints. This is what the furnace was built with as well as much of the village.