The Chileans were stuck in a mine *underground* for almost 2 whole months.
Example sentence - The underground passageways were wet, dirty, and scary.
Example sentence - The underground blast caused the mine to close.
He had been contacted by the underground. They militia was contacted by Paul Revere.
A spirit raised from depth of underground.
Slaves escaping through the Underground Railroad were unsure of their destiny.
I am between stations of the Underground Railway.
His tear ducts were damaged in the explosion. Underground water is moved into the city through the aqua ducts.
The rabbit burrowed underground.It was a bit too dark underground for Bob's liking.The underground base was compromised.
The Underground railroad helped many slaves to freedom.
The water table is underground. Mining is used to extract ores from underground. The placement of underground utility wires must be marked.
(An aquiclude is an impermeable water barrier underground) The formation of an aquiclude meant that there were no deep water sources for irrigation.
The Underground Railroad was a network of secret routes and safe houses used by slaves to escape to free states or Canada.