On the Cae Gwyn Cave

Abstract

In a communication which I made to the Society “On the Drifts of the Vale of Clwyd and their Relation to the Caves and Cave-deposits”*, I considered the subject under the following heads:— (1) The Age of the Drift. (2) The Relation of the Deposits in the Caves to that Drift. In discussing the age of the drift, I was of course obliged to offer a tentative classification of the Pleistocene deposits of the district in order to show the relative position and age of the St. Asaph beds, to which I referred the drift on the flanks of the hill in which the Ffynnon Beuno Caves occur. The classification I suggested has been called in question, and I have relegated the discussion of this part of the subject in its wider bearing to a separate paper. It will be desirable, however, to restate briefly the conclusions at which I then arrived. They were:— That the interpretation of the glacial phenomena of North Wales is much more simple than that suggested by most recent observers in East England. That we have evidence of the following sequence of events:— That glacier-ice came down from the Snowdon and Arenig group of mountains, riding across pre-existing north and south valleys as far at any rate as the Cheshire plain on the east, and as far as the Irish Channel, which was the corresponding north and south valley on the west. That glacier-ice came also from the north and held back the