1916-17.] The Bone-Cave in the Valley of Allt nan Uamh. 327 
XIX. — The Bone-Cave in the Valley of Allt nan Uamh (Burn of 
the Caves), near Inchnadamff, Assynt, Sutherlandshire. 
By B. N. Peach, LL.D., F.R.S., and J. Horne, LL.D., F.R.S. 
With Notes on the Bones found in the Cave, by E. T. Newton, 
F.R.S. (With Four Plates and Six Text-Figures.) 
(Read February 19, 1917. MS. received May 28, 1917.) 
CONTENTS. 
, PAGE 
I. Physical and Geological Features of the District .... 328 
II. Glaciation of the District surrounding Inchnadamff and the Valley 
of Allt nan Uamh 332 
III. Drainage of Underground Water and Formation of Caves in the 
Plateau of Cambrian Limestone .... ... 334 
IV. Relation of the Creag nan Uamh Bone-Cave to the Glacial Deposits 
in the Valley of Allt nan Uamh 337 
V. Sequence of Deposits in the Bone-Cave 338 
VI. Notes on the Bones found in the Creag nan Uamh Bone-Cave. By 
E. T. Newton, F.R.S 344 
A characteristic feature of the plateau of Cambrian Limestone in the 
neighbourhood of Inchnadamff is the occurrence in it of swallow-holes, 
caves, and subterranean channels which are intimately associated with 
the geological history of the region. The valley of Allt nan Uamh 
(Burn of the Caves), locally known as the Coldstream Burn, furnishes 
striking examples of these phenomena. One of the caves in this valley 
yielded an interesting succession of deposits, from which were collected 
abundant remains of mammals and birds. The discovery of bones of 
the Northern Lynx, the Arctic Lemming, and the Northern Vole among 
these relics, and the collateral evidence of the materials forming some 
of these layers, seem to link the early history of this bone-cave with 
late glacial time, or at least with a period before the final disappearance 
of local glaciers in that region. 
Several caves in the limestone cliff on the southern slope of the valley 
of Allt nan Uamh were noted by us in the course of the Geological Survey 
of the district in 1885, but as our attention was directed mainly to the 
complicated tectonics of the region, no time was spent on their exploration. 
Fortunately, during a visit to Inchnadamff in 1889, an opportunity was 
afforded of a systematic examination of the cave now under description, 
when we were assisted in the work by the Rev. Mr Short, who had consider- 
able experience in cave exploration in England, and by Mr Clarence Fry. 
