Burrow
The Persians took advantage of gravity to make qanat's work. A qanat was an underground tunnel that allowed underground spring water to flow down from the mountains and into canals. Along the underground tunnel were vertical shafts dug 20-30 meters apart to allow for ventilation and repairs.
By defintion, a tunnel is underground.
A burrower is a creature who burrows, or who lives in an underground hole which they have made themselves.
The grey wolf's shelter is usually a den dug in the ground on a hillside or it can be underground with a tunnel about three meters long leading to where the cubs are.
There is no underground tunnel.
Animals that live underground are classified as subterranean dwellers. They use tunnels to travel and create dens and multiple entries and exits. The common name for a tunnel is a burrow.
yes they did
it is an adjective because it is describing something.ex. the tunnel is underground-it describes where the tunnel is :)
A shallow tunnel - like the Paris metro - is dug, and then roofed over. A deep tunnel is bored.
In 1846 Charles Pearson, a London Counsel, made a proposal to lay underground lines connecting the main railway stations of the city. The first tunnel was dug in January 1860.
Animals that live underground are known as Fossorial animals. Many animals burrow and live underground including: prairie dogs, rats, badgers, ground hogs, ferrets, etc