Pasiwyd Mesur Tryweryn gan y Senedd ym 1957 The Tryweryn Bill was passed by Parliament in 1957 Caniataodd hyn i Gyngor Dinas Lerpwl orlifo Cwm Tryweryn heb fod angen caniatād cynllunio gan y cyngor lleol This allowed Liverpool City Council to flood the Tryweryn Valley without the need for planning permission from the local council Ym 1965, diflannodd pentref bach Capel Celyn In 1965, the small village of Capel Celyn disappeared Collwyd cymuned Gymraeg lle`r oedd pobl wedi byw a gweithio am genedlaethau o dan gronfa ddŵr Llyn Celyn A Welsh-speaking community where people had lived and worked for generations was lost under Llyn Celyn reservoir Dinistriwyd y pentref a`r ffermydd cyfagos er gwaethaf gwrthwynebiad holl Aelodau Seneddol o Gymru ac eithrio un The village and surrounding farms were destroyed despite the opposition of all the Welsh Members of Parliament except one Gorfodwyd pob un o`r 67 o drigolion y pentref, a oedd yn cynnwys ysgol, capel a 12 fferm, i adael Every one of the 67 residents of the village, which included a school, chapel and 12 farms, was forced to leave Trefnwyd protestiadau gan Fyddin Cymru Rydd a Chymdeithas Amddiffyn Cymru Protests were organised by the Free Wales Army and Society for the Protection of Wales Yn 2005, rhoddodd Cyngor Dinas Lerpwl ymddiheuriad In 2005, Liverpool City Council gave an apology Yn ystod cyfnodau o dywydd poeth, mae lefel y gronfa ddŵr yn gostwng During periods of hot weather, the level of the reservoir falls Gwelir adfeilion y pentref The remains of the village are seen Mae waliau caeau yn ymddangos o`r dŵr, a gellir gweld llawr llechfaen cegin ffermdy Walls of fields appear from the water, and the slate floor of a farmhouse kitchen can be seen Gall ymwelwyr gerdded ar hyd rhannau o`r hen ffordd ar ochr y dyffryn Visitors can walk along parts of the old road on the side of the valley Roedd pobl yn byw yma ac ar un adeg roedd yn bentref a chymuned lwyddiannus People lived here and it was once a successful village and community Mae`n bwysig nad ydym yn anghofio It is important that we do not forget |