Cyfle i drwsio trac trên bach Yr Wyddfa, a chlywed am hanes y chwarel ac am luniau arbennig. We're in Llanberis, searching Padarn Lake for a rare fish, and enjoying the folklore.
4 o fisoedd ar ôl i wylio
48 o funudau
Gweld holl benodau Cynefin
