In my opinion Jigsaw has it right. When I moved into this village, 30 years ago no one else had a decent lamp so one or two people used to borrow my "blue eye" lamp and lamping became a local craze for a short time. The son of a neighboring farmer used to run his dads greyhounds but it wasn't long before one of them ran into a cast concrete cattle trough ?.
I stopped lending the lamp as it always came back in need of mending. Think the lads used to have a few jars before going.
If you're going to lamp fast or rough ground (and that covers most ground), be very careful.?