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DisgrifiadLandslide on Graig Road between Godre'r Graig and Ystalyfera - geograph.org.uk - 1482736.jpg
English: Landslide on Graig Road between Godre'r Graig and Ystalyfera In 1963 part of Mynydd Allt-y-grug slipped down over this section of road sweeping away all the houses either side of it. The road has only ever been reopened as a much narrower path for light foot traffic.
In the photo you can see how much the landslide has reduced the width of the road. However this is not the whole story: a few hundred yards further back the road is a third wider again with a pavement on both sides.
The landslide is thought to have been triggered when a water main supply was accidentally ruptured, allowing water between layers of otherwise impermeable rock. Even now at the southwest end of the landslip there are extra drainage pipes running down the mountain to help prevent further occurrences.
This image was taken from the Geograph project collection. See this photograph's page on the Geograph website for the photographer's contact details. The copyright on this image is owned by Nigel Davies and is licensed for reuse under the Creative Commons Attribution-ShareAlike 2.0 license.
rhannu – gallwch gopïo, dosbarthu a throsglwyddo'r gwaith
ailwampio – gallwch addasu'r gwaith
Ar yr amodau canlynol:
cydnabyddiaeth – Mae'n rhaid i chi nodi manylion y gwaith hwn, rhoi dolen i'r drwydded, a nodi os y bu golygu arni, yn y modd a benwyd gan yr awdur neu'r trwyddedwr (ond heb awgrymu o gwbl eu bod yn eich cymeradwyo chi na'ch defnydd o'r gwaith).
rhannu ar dermau tebyg – Os byddwch yn addasu'r gwaith hwn, neu yn ei drawsnewid, neu yn adeiladu arno, mae'n rhaid i chi ddosbarthu'r gwaith dan drwydded sy'n union yr un fath same a'r gwreiddiol.
== {{int:filedesc}} == {{Information |description={{en|1=Landslide on Graig Road between Godre'r Graig and Ystalyfera In 1963 part of Mynydd Allt-y-grug slipped down over this section of road sweeping away all the houses either side of it. The road has on
Cysylltiadau'r ffeil
Mae'r 1 tudalennau a ddefnyddir isod yn cysylltu i'r ddelwedd hon:
Mae'r ffeil hon yn cynnwys gwybodaeth ychwanegol, sydd mwy na thebyg wedi dod o'r camera digidol neu'r sganiwr a ddefnyddiwyd i greu'r ffeil neu ei digido. Os yw'r ffeil wedi ei cael ei newid ers ei chreu efallai nad yw'r manylion hyn yn dal i fod yn gywir.