prehistoric [Adjective] + cave [Noun]

Strength Strength Dispersion
A:
6
CHISQ:
262.96
AWT:
22,060,799
TTEST:
2.4
G2:
42.02
FAWT:
2.46
MI:
5.52
LOGLOG:
14.26
JD:
0.6
MI3:
10.69
DICE:
0.58
RANGE: