ed in and around the park provide a useful framework for studying drumlins because some have not been disturbed, preserving the natural form, while others have been excavated, allowing easy inspection. Swamps are common, visible on Map 4, of the low-lying areas around drumlins since the surface is flat and drainage is poor. The brief stop at a drumlin on the way to the Rice Lake drumlin reinforced the geomorphology viewed in and around Burnham Park. One difference that this area appears to have is better drainage between drumlins. There is greater human activity on the drumlin that has likely altered the drumlin from its original form. Roads cut through it to reveal similar sediment composition as previous drumlins. Another stop at the Indian River identified it as a misfit stream that runs through an old glacial spillway. The Rice Lake drumlin is oriented 15 degree from north on the border of Rice Lake. There is a continuous, 10-degree slope towards the lake that forms part of the river valley. The drumlin is comprised of highly weathered sands and gravel and a large portion of the drumlin has been excavated, likely for industrial use. The discontinuous, stratified sediments on the northern section provide evidence of folding and shifting. Geomorphology in the area is complex and visual observation is not enough to determine the processes at work. Part III: Warsaw CavesWater has had a great effect on the geomorphology of this area. The limestone bedrock structure is weak enough that water can erode it and dissolve certain minerals common in limestone. The area is an old glacial spillway and large volumes of Calcium Carbonate rich water ran through the rock. The result is numerous karsts, kettles, sinkholes, and potholes formed near the surface. The formation of these features continues today and the bedrock structure is constantly subject to weakening by moving water. Karst features will eventually destroy themselves an...
