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Rock clacking heard near Cardinal Marsh south of Cresco
The witness hiked into dense timber to scout for signs and found arches, tree breaks, and woven saplings. After hearing an unexplained sharp noise from the hilltop, the witness waited and then heard two distinct clacks described as rocks struck together. The witness then left the hill and exited the area.
Unidentified soundTree breakStructure or nest
Memory of a possible encounter as young girls riding horses at night near the Coralville Reservoir
Four girls were riding horses on a moonlit night when their horses stopped and focused on a hilltop ahead. They heard a loud guttural growl mixed with vowel-like sounds and wood snapping, which frightened them. They galloped back to the farm where they were staying. The next morning they found a small wooden corral they had built on that hilltop broken apart.
GrowlVocalizationTree break