It’s not just because of the mountains, but also down to places like Zip World Penrhyn Quarry at Bethesda, the world’s fastest zip line (can you handle 100mph/160kmh?).
Nid dim ond y mynyddoedd sy’n denu ond hefyd gyrchfannau fel Zip World Chwarel y Penrhyn, ym Methesda, weiren sip gyflymaf y byd (allwch chi ddygymod â 100mya/160kya?).