The 3 national parks in Wales, Brecon Beacons, Pembrokeshire Coast and Snowdonia were formed to protect spectacular landscapes and provide recreation opportunities for the public.
Cafodd y 3 pharc cenedlaethol yng Nghymru Bannau Brycheiniog, Arfordir Sir Benfro ac Eryri eu ffurfio i warchod tirweddau ysblennydd a darparu cyfleoedd hamdden i'r cyhoedd.