e8ce8054_KS2_TT___Earth_Science_On_Site__Observations_teaching_points
[Interpretation/comments] No natural process, e.g. rivers, could have removed the rock and left a dry flat floor and near-vertical cliff face. This was once a quarry. We know from old photographs! [Observations/teaching points] 
At one time the ground was level with the soil at the top of the cliff face. Not any more!
DRY/KS2/TT - Earth Science On-Site