Illinois:
N 15S-755895-4223155
Cow Shank Natural Bridge
N 16S-284436-4159217
Preachers Eye
N 16S-293167-4169383
Pomona Natural Bridge
N 16S-320423-4137145
Rainbow Arch
N 16S-323760-4155080
unnamed
N 16S-342545-4152320
Cedar Wonders Arch
N 16S-353804-4153590
Bell Smith Natural Bridge
N 16S-378420-4162515
N 16S-379520-4163110