underground [Adjective] + cave [Noun]

Strength Strength Dispersion
A:
14
CHISQ:
1,081.68
AWT:
7,835,448
TTEST:
3.69
G2:
103.83
FAWT:
6.94
MI:
6.31
LOGLOG:
24.02
JD:
0.73
MI3:
13.92
DICE:
1.01
RANGE: