In early February, a sinkhole 11 feet in diameter opened up ... Story continues below photo gallery. Subsidence remains a concern, as some abandoned mine locations and their associated shafts ...

The rapidly-growing sinkhole in Upton County is the latest of many problems caused by old wells in the Permian Basin.

Sinkholes can range in size from just a few feet wide to ones that cover a vast area spanning ... s southwestern region is at risk for soil subsidence, where underground materials shift or fall ...

The oil-filled hole around a plugged well on an Upton County ranch is one on a growing list of problems cropping up with old ...

There are two main types of sinkholes: those that form slowly over time (cover-subsidence sinkholes) and those that appear suddenly (cover-collapse sinkholes). While it is usually the latter type ...

Sinkholes mainly occur in what is known as ‘karst terrain’; areas of land where soluble bedrock (such as limestone or gypsum) can be dissolved by water. With cover-subsidence sinkholes the ...

The opening of the sinkhole, originally about the size of a utility access hole cover, had grown to about ... occur in the area because of subsidence from coal mining activity.

Sinkholes mainly occur in what is known as ‘karst terrain’; areas of land where soluble bedrock (such as limestone or gypsum) can be dissolved by water. With cover-subsidence sinkholes the bedrock ...

There are two main types of sinkholes: those that form slowly over time (cover-subsidence sinkholes) and those that appear suddenly (cover-collapse sinkholes). In many cases, sinkholes don’t form ...