Though the North Koel River runs through the reserve, the animals depend on man-made holes for water, making themselves easily accessible to humans.

Rubislaw Quarry is one of the biggest man-made holes in Europe.

Some 6m tonnes were hewn from the earth until the quarry's closure in 1971, leaving one of the largest man-made holes in Europe.

PMC's open cast mine is Africa's widest man-made hole at almost 2,000 meters wide.

He was too charitable to report that many scientists consider the space station a man-made black hole, down which to pour taxpayers' money.

Sand martins arrived, attracted by man-made holes in limestone cliffs, and bats came to the 30-yard-long specially built bat cave.

Chultuns are man-made holes in the ground and are found in many parts of Mesoamerica.

At least fifteen people had been standing around the boat when Cal discovered the man-made hole in its hull.

The Westfield open cast coal mine lies to the west of the village and is still regarded as the biggest man-made hole in Europe by local people.

The nest is built in a tree cavity or similar natural or man-made hole, and the normal clutch is three to five eggs.