What is this karst landform (N 37.81090 W 80.49637) and how did it form?

What is this karst landform (N 37.81090 W 80.49637) and how did it form?

This landform is a caldera formed by the collapse of the volcanic basalt lava upon evaluation of the lava. The current lake surface is the same elevation as the river to the east.

1 points

QUESTION 5

What is this karst landform (N 37.81090 W 80.49637) and how did it form? Hint: this is the end of Milligan Creek. Where does it go from this point?

a.

This blind valley formed because the water goes down into an underground cave system.

b.

This offset stream formed when a fault separated the upstream portion of the stream from its downstream segment.

c.

This interrupted stream formed because the water goes down a sinkhole into an underground water storage system built by the surrounding farms.

d.

This dead-end stream was built during the civil war as a trap for the union army.
The post What is this karst landform (N 37.81090 W 80.49637) and how did it form?

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