There have resently been some posts here doubting the possibility of
large game hunting before Cro Magnon. Have a look at:
http://britac3.britac.ac.uk:80/cba/ba/ba18/ba18feat.html#roberts
for some evidence of the contrary. Large game of up to 700 kg edible
mass was killed and butchered in England some 500 kya.
- Hans