subterranean [Adjective] + chamber [Noun]

Strength Strength Dispersion
A:
3
CHISQ:
70.67
AWT:
31,429,723
TTEST:
1.66
G2:
20.44
FAWT:
1.73
MI:
4.67
LOGLOG:
7.41
JD:
0.43
MI3:
7.84
DICE:
0.16
RANGE: