Barry Docks: Industry & Mute swan Math Eitemau Uwchlwytho gan 'A Dedicated Naturalist', the Mary Gillham Archive Project
Pentwyn Reservoir: Plant/tree & Geology Math Eitemau Uwchlwytho gan 'A Dedicated Naturalist', the Mary Gillham Archive Project
Pentwyn Reservoir: Bird Math Eitemau Uwchlwytho gan 'A Dedicated Naturalist', the Mary Gillham Archive Project
Neuadd Reservoir, Brecon Beacons : Bird Math Eitemau Uwchlwytho gan 'A Dedicated Naturalist', the Mary Gillham Archive Project
Taf Fechan: Landscape & Water Math Eitemau Uwchlwytho gan 'A Dedicated Naturalist', the Mary Gillham Archive Project
