Gwefan grwp RIGS Gogledd-ddwyrain Cymru - yn ymdrin â threftadaeth ddaearegol
Sir Ddinbych, Sir y Fflint, Bwrdeistref Sirol Wrecsam a Dwyrain Conwy.

The website of the North-East Wales RIGS group - covering the geological heritage of Denbighshire, Flintshire, Wrexham and East Conway.