“Deposits formed on hill slopes are called colluvium where they are fine-grained, and taluvium if they are of coarse-grained rock debris.”

“Gravitational sediments can enter a cave system in the form of entrance talus material, colluvium, roof fall, or phreatic infiltrates.”

“Bronze Age and Neolithic pottery and flints from the basal soil and the colluvium indicate that a settlement was nearby.”