Wikimedi'Òc

Llanfairynghornwy, view across Anglesey - geograph.org.uk - 455489.jpg - GeographBot

Monument on the summit of Mynydd y Garn - geograph.org.uk - 1270107.jpg - GeographBot

William Thomas Memorial, Isle of Anglesey, Wales.jpg - Talsarnau Times

Plaque on William Thomas Memorial, Isle of Anglesey, Wales.jpg - Talsarnau Times

Sir William Thomas Obelisk.jpg - Talsarnau Times

William Thomas memorial plaque..jpg - Talsarnau Times

Trig point on Mynydd y Garn DSC 7123 -1.jpg - Talsarnau Times

Mynydd y Garn - geograph.org.uk - 3329784.jpg - GeographBot

Obelisk atop Mynydd y Garn, Isle of Anglesey.jpg - Atm1927

William Thomas Memorial plaque - geograph.org.uk - 3904804.jpg - SteinsplitterBot