0 a hole in the ground, especially in an area of limestone rock, that has been formed naturally, for example by water that has worn away the rock: --
1 part of a computer network or server to which internet activity is directed so that it cannot damage the part it is being aimed at: --
2 to direct internet activity to a different part of a network or server, so that it cannot damage the part it is being aimed at: --
The geological process that is producing the sinkholes is under study, but is a total mystery.
Large swells and dips can be encountered along the route, formed by swallets and sinkholes in the surrounding limestone.
During dry spells all water sinks very quickly on reaching the limestone, through sinkholes.
The landscape includes many caves, sinkholes, springs, and streams.
Most of the parish has the typical limestone features of cockpits, sinkholes, caves and underground passages.
Many places are subject to earthquakes, landslides, tsunamis, volcanic eruptions, tornadoes, sinkholes, blizzards, floods, droughts, wildfires, and other calamities and disasters.
Additionally, as many as 52 sinkholes were reported to have formed along roadways in the county.
All ramps and sinkholes are worth 5,000,000 for 30 seconds.