This is a trial pit we undertook to check for desiccated clay soils and enable an assessment for foundation design for a house on the West Lancashire Plain. This is high strength and very high strength Devensian Till - Diamicton and interesting the large pocket of coarse green sand. A water lain channel doesn't seem plausible, so may be a large boulder, weathered to sand ( there were fragments of green sandstone lithorelicts within it ). #lovegeology; #diggingholes