underground [Adjective] + tunnel [Noun]

Strength Strength Dispersion
A:
17
CHISQ:
979.91
AWT:
6,042,097
TTEST:
4.05
G2:
114.1
FAWT:
9
MI:
5.9
LOGLOG:
24.11
JD:
0.76
MI3:
14.07
DICE:
0.89
RANGE: