I walk past this 2 or 3 times a week, generally. It s at the lower end of The Coombe, near Chyandour. Presumably it s there in connection with the former stables across the lane, now converted to a dwelling.
Interesting! I read in Courtney s Half a Century in Penzance that the mules were a common sight in Penzance sometimes passing through the town s crowded market loaded up with ore and very frisky on occasions! Imagine it!