Tried to get into upper dovergill but found it partially collapsed after digging for a while and almost getting through I became unhappy with the looseness, a crowbar would be needed to dig away more of it, it had obviously slumped a bit on the surface. I then dropped down Primrose which was nice but did not do the connection rift, looked very tight. Then entered Dover gill lower cave until apparent sump or very low airspace duck blocked my way. Getting out proved problematic!