Secret World of Porth yr Ogof, The - Martyn Farr

Arweinlyfr byr i fyd hardd ond peryglus Porth yr Ogof, Ystradfellte, Brycheiniog, un o ogofâu mwyaf syfrdanol ac adnabyddus Prydain, gan ogofäwr profiadol. 28 llun lliw, 5 llun du-a-gwyn a 2 fap.

English Description: A short guide to the beautiful but dangerous world of Porth yr Ogof, Ystradfellte, Breconshire, one of the most impressive and best-known caves in Britain, by an experienced caver. 28 colour and 5 black-and-white illustrations and 2 maps.

ISBN: 9781859025598

Awdur/Author: Martyn Farr

Cyhoeddwr/Publisher: Gomer@Lolfa

Dyddiad Cyhoeddi/Publication Date: 31/07/1998

Iaith/Language: EN

Argaeledd/Availability: Out of print