South Wales Caves

This interactive survey of Dan Yr Ogof shows the cave passages in relation to the geology of the mountain. Major faults are shown as red lines, synclines as yellow lines and antisynclines as orange. Navigate the map by zooming and scrolling. Data shown on this map is derived from the unpublished PHD thesis (The structural Geomorphology of Dan Yr Ogof Cave, Tawe Valley) and associated geological map of Dan Yr Ogof by Alan Coase