Ddiwedd yr wythnos daeth Mr Campbell a Dave i'r dosbarth i egluro i ni sut i gadw'n saff ar y mynyddoedd. Roedd gan Dave dair cot, sannau tew, esgidiau cryf a het gynnes. Roedd y plant wedi gwirioni o glywed fod y ddau yn gweithio gyda'r Tywysog William!
Mr Campell and Dave came to see us to explain about how to keep safe in the mountains. Dave had three coats! He also had thick socks, boots and a warm hat. The children were very excited to learn that Mr Campell and Dave work with Prince William!