The Iowa Department of Natural Resources has decided to let a cattle producer continue to use an underground manure tank built in karst terrain without a permit, despite concerns a future leak could ...

Karst is formed when chemical weathering, such as acid rain, or natural dissolution breaks down limestone, dolostone marble or evaporite deposits -- types of geological formations, according to the ...

Beneath forests, farms, and neighborhoods, water slowly dissolves rock, forming hidden underground channels and caves in karst landscapes. This gradual process can lead to sudden sinkhole collapses ...

DECORAH - Though it provides little solace for northeast Iowans worried about the impact of livestock confinements in areas of karst topography, attendees at a daylong forum on the subject at Luther ...

In past columns I discussed two of the features a person can find in our Indiana karst landscape. There are, however, other karst features of interest in our state. Sinkholes are a very common ...