Sinkholes are fairly common, due to collapsed caves, old mines or dissolving material, but the circumstances in South Dakota ...

Stuart and Tonya Junker loved their quiet neighborhood near South Dakota's Black Hills — until the earth began collapsing ...

Sinkholes are fairly common, due to collapsed caves, old mines or dissolving material, but the circumstances in South Dakota ...

The best places to visit in Mexico here showcase large and medium-sized cities, but there are also some smaller pueblos on ...