An interesting one minute film clip from 1950s or 60s Wales, shows a pot oven baking bread hung over a peat (turf) fire with coals. Chunks of burning peat are placed on the flat lid to bake. There is no lip along edge of the lid (so differs from dutch oven top). Excerpts mentioning Ireland and Scotland. Film clip below.
These endangered fences using rocks or trees/bushes should be preserved... or at least appreciated. There are several upcoming hedgerow talks and some very good talks on a variety of stone walls, that were taped.