struggled for their existence in the neighbourhood of Pickering.

[Illustration: A plan and section of Kirkdale Cave.]

It was during the summer of 1821 that the famous cave at Kirkdale was
discovered, and the bones of twenty-two different species of animals were
brought to light. Careful examination showed that the cave had for a long
time been the haunt of hyænas of the Pleistocene Period, a geological
division of time, which embraces in its latter part the age of Palæolithic
man. The spotted hyæna that is now to be found only in Africa, south of
the Sahara,[1] was then inhabiting the forests of Yorkshire and preying on
animals now either extinct or only living in tropical climates. The waters
of Lake Pickering seem to have risen to a sufficiently high level at one
period to drive out the occupants of the cave and to have remained static
for long enough to allow the accumulation of about a foot of alluvium
above the bones that littered the floor. By this means it appears that the
large quantity of broken fragments of bones that were recent at the time
of the inundation were preserved to our own times without any perceptible
signs of decomposition. Quarrying operations had been in progress at
Kirkdale for some time when the mouth of the cave was suddenly laid bare
by pure accident. The opening was quite small, being less than 5 feet
square, and as it penetrated the limestone hill it varied from 2 to 7 feet
in breadth and height; the quarrying had also left the opening at a
considerable height up the perpendicular wall of stone. At the present
time it is almost inaccessible, and except for the interest of seeing the
actual site of the discoveries and the picturesqueness of the spot the
cave has no great attractions.

[Footnote 1: Dawkins, W. Boyd. "Early man in Britain," p. 103.]