Buddle pit

A buddle pit is like a big bowl made out of stone, where people used to wash and separate minerals like coal or tin. Think of it like washing your toys in a big bowl of water, except instead of toys, people put dirty rocks in it! The buddle pit would have water running through it, which would make the minerals separate and settle at the bottom of the pit. Then people could collect the minerals they wanted and leave the rest behind. It's kind of like a giant washing machine for rocks!