Profile A-A’ illustrates the strata in and around the primary sinkhole within the lake. An abrupt change in the lake bottom slope can be seen on the flanks of the sinkhole. This is a filled, collapse-sinkhole with steep flanks overlain by offlapping fill and slumps. The fill is acoustically transparent with few low-amplitude reflections discernible. This is to be expected since the source of the fill is primarily clean quartz sands brought in from the adjacent Trail Ridge deposits. Plotted on the Kingsley Lake survey track map are the karst features identified from seismic profiles; Types 1, 2, 3, and 6 karst features were found. Features 1 and 2 represent the primary sinkhole surrounded by Type 6 undisturbed depostional layers.

The Type 1, 3 feature seen in profile B-B’ appears to be a secondary collapse feature that occurred after the formation of the main doline shown in profile A-A’. Unlike the main doline, this feature is not completely filled with sediment. The data does not indicate that the feature extends through the surficial and Hawthorn Group sediments into the Floridan aquifer (>95 m).