Hoffai Atebol ddiolch i’r canlynol am eu cyfraniadau wrth ddatblygu’r wefan hon.
Byron Morley
Dafydd Saunders Jones
Dennis Foster
Dylan Jenkins
Glyn Saunders Jones
Megan Lewis
Sandra De Pol am gyfieithu’r adnodd i’r Sbaeneg
Eirian Jones am olygu’r adnodd
Walter Ariel Brooks am olygu'r adnodd
Bethan Mair
Colin Isaac
Eluned Evans Grandis
Isaías Grandis
Hedd ap Emlyn
Non ap Emlyn
Robin Bateman
Steph Davies
Alun Morgan
Ceris Gruffudd
Dewi Hughes
Eluned Evans Grandis
Isaías Grandis
Elvey MacDonald
Walter Ariel Brooks
Dr Carol James, Ysgol Gynradd Penboyr, Sir Gaerfyrddin
Rita Bevan, Ysgol Bro Edern, Caerdydd
Sara Jones, Ysgol Pentreuchaf, Llithfaen, Gwynedd
Alejandro Jones a Bryn ei fab
Alison Davies, Mapping Company Ltd
Archifdy a Chasgliadau Arbennig Prifysgol Bangor
Cambrian Mountains Initiative
Ceri Jones
Dafydd Glyn Saunders Jones a’i feibion Harri, Rhys a Tomos
Eluned Evans Grandis
Gwefan Glaniad
Jeremy Wood
Julio Alonso a Sara Borda Green
Llyfrgell Genedlaethol Cymru
Maria Leijerstam
Steph Davies
The Vale of Rheidol Railway
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