View over Brittany lake Llyn Llydaw in Snowdonia National Park Wales

llyn llydaw brittany lake mount snowdon wales snowdonia yr wyddfa parc cenedlaethol eryri hiking mountain peak british isles sunny day national nature reserve gwynedd caernarfonshire national three peaks challenge gwyddfa rhita alpine topography alpine terrain craig fach glaciation weekend day trip vacation uk united kingdom miners track pen y pass summit mountain top mountain summit landscape highest mountain nature adventure blue sky aerial moutain lake alpine lake view welsh causeway lake causeway snowdonia national park treeless national park