https://tirlun.cymru/ 2026-04-02T09:04:05+00:00 monthly 0.5 https://tirlun.cymru/pwysigrwydd-tirweddau-dynodedig/ 2026-03-24T17:26:02+00:00 monthly 0.5 https://tirlun.cymru/ynglyn-a-tirlun/ 2025-03-21T10:03:33+00:00 monthly 0.5 https://tirlun.cymru/gweithgareddau/ 2026-03-25T16:17:52+00:00 monthly 0.5 https://tirlun.cymru/gweithgareddau/beth-yw-tirwedd-ddynodedig/ 2025-02-24T11:21:35+00:00 monthly 0.5 https://tirlun.cymru/gweithgareddau/sut-gallwn-ni-ddatblygu-llwybr/ 2026-03-25T16:22:53+00:00 monthly 0.5 https://tirlun.cymru/gweithgareddau/sut-rydyn-ni-n-defnyddio-egni/ 2025-02-25T11:00:00+00:00 monthly 0.5 https://tirlun.cymru/gweithgareddau/beth-yw-llygredd/ 2025-02-25T11:00:59+00:00 monthly 0.5 https://tirlun.cymru/gweithgareddau/cymru-ysbrydoledig/ 2025-02-25T11:01:26+00:00 monthly 0.5 https://tirlun.cymru/gweithgareddau/beth-yw-mythau-a-chwedlau-cymru/ 2025-02-25T11:02:01+00:00 monthly 0.5 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