Imagine there's an underground man made structure e.g. a tunnel or an underground train station that collapses creating a depression in the surface. Would that technically be called a sinkhole? What is the exact definition of a sinkhole (for someone illiterate in earth sciences, please, thanks.)?
The wikipedia article on sinkholes seems to suggest that they should be called collapses and not sinkholes:
Collapses, commonly incorrectly labeled as sinkholes also occur due to human activity, such as the collapse of abandoned mines and salt cavern storage in salt domes in places like Louisiana, Mississippi and Texas. More commonly, collapses occur in urban areas due to water main breaks or sewer collapses when old pipes give way.
The media keeps calling them sinkholes. A google search on sinkholes will give numerous news articles that call these incidents sinkholes.
P.S. Sorry about the tags. Not sure what tags to use.