Hole in bedrock; dumped filling used in leveling.
Probably a natural water line, tending to wash out, has been cut back for various purposes, and finally all filled in to make level bedding for 4th c., ... Ca. 350-270 B.C ... Notebook uses 24/ΛΑ, continuing with 19/ΚΘ and 19/ΛΕ-ΛΣΤ, as grid.
