Fersiwn yn ôl 06:42, 15 Chwefror 2008 golygu Porius1 (sgwrs \| cyfraniadau) 37,236 golygiad Tudalen newydd: {{Infobox lake \| lake_name = Llyn Fawr \| image_lake = \| caption_lake = \| image_bathymetry = \| caption_bathymetry = \| location = south Wales \| coords = \| type = natur...		Fersiwn yn ôl 06:43, 15 Chwefror 2008 golygu dadwneud Porius1 (sgwrs \| cyfraniadau) 37,236 golygiad BDim crynodeb golygu Cymharer â'r fersiwn dilynol →
Llinell 1: ~~{{Infobox lake~~ ~~\| lake_name = Llyn Fawr~~ ~~\| image_lake =~~ ~~\| caption_lake =~~ ~~\| image_bathymetry =~~ ~~\| caption_bathymetry =~~ ~~\| location = south [[Wales]]~~ ~~\| coords =~~ ~~\| type = natural lake, [[reservoir]]~~ ~~\| inflow =~~ ~~\| outflow =~~ ~~\| catchment =~~ ~~\| basin_countries = United Kingdom~~ ~~\| length =~~ ~~\| width =~~ ~~\| area = 9.8 ha (24 acres)~~ ~~\| depth =~~ ~~\| max-depth =~~ ~~\| volume =~~ ~~\| residence_time =~~ ~~\| shore =~~ ~~\| elevation = 368 m~~ ~~\| islands =~~ ~~\| cities =~~ }} Llyn yn [[Rhondda Cynon Tâf]] yn ne Cymru yw '''Llyn Fawr'''. Mae'n fwyaf adnabyddus oherwydd y darganfyddiadau pwysig o arfau a chelfi o ddiwedd [[Oes yr Efydd]] a dechrau [[Oes yr Haearn]] a wnaed yno.

Llyn Fawr: Gwahaniaeth rhwng fersiynau