Rhythmic, wet clicks pulse from the sonar device, echoing like firing synapses in an exhausted mind. Tracing these erosion patterns across the limestone requires following fading sediment grains that have been passively shaped by currents long since passed. Each jagged line suggests a history where a singular glitch or external pressure carved out a path through the riverbed below. In this shadowed space, the distinction between a sudden error and a slow, inevitable drift finally dissolves into the silt.
