Brockhole on Windermere

Mr P has had his arm twisted  volunteered to take over running four orienteering events for local schools in May. Today he gave me a map of a course round the Brockhole Lake District Visitor Centre to check. I took the opportunity to have a good look round and discovered a few strange boulders with carvings. Despite taking several photos, I can't make out what's carved here. I'll take a closer look next time - probably when I'm helping with lots  of school children running round.