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Hole-in-the-Ground; Metadata. This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
The Kola Superdeep Borehole SG-3 (Russian: Кольская сверхглубокая скважина СГ-3, romanized: Kol'skaya sverkhglubokaya skvazhina SG-3) is the deepest human-made hole on Earth (since 1979), which attained maximum true vertical depth of 12,262 metres (40,230 ft; 7.619 mi) in 1989. [1]
A borehole is a narrow shaft bored in the ground, either vertically or horizontally. A borehole may be constructed for many different purposes, including the extraction of water ( drilled water well and tube well ), other liquids (such as petroleum ), or gases (such as natural gas ).
As material slid into the hole formed, it closed the vent and the process repeated, eventually forming the huge hole. [3] Blocks as large as 26 feet (8 m) in size were flung as far as 2.3 miles (3.7 km) from the crater. [4] To the west of Hole-in-the-Ground is an even bigger maar, 1.1 miles (1,820 m), but older and more eroded, called Big Hole.
Hole types in engineering: blind (left), through (middle), interrupted (right). In engineering, machining, and tooling, a hole may be a blind hole or a through hole (also called a thru-hole or clearance hole). A blind hole is a hole that is reamed, drilled, or milled to a specified depth without breaking through to the other side of the ...
The ground drawings or geoglyphs were created by humans for an as-yet-unknown reason. The intaglios are located east of the Big Maria Mountains , about 15 miles (24 km) north of downtown Blythe, just west of U.S. Highway 95 near the Colorado River .
The Kola Superdeep Borehole was a similar project of the USSR in the 1970s and early 1980s the USSR attempted to drill a hole through the crust, to sample the Mohorovičić discontinuity. The deepest hole ever drilled failed not because of lack of money or time, but because of rock physics at depth.
The ice becomes buried in the sediment and when the ice melts, a depression is left called a kettle hole, creating a dimpled appearance on the outwash plain. Lakes often fill these kettles; these are called kettle hole lakes. Another source is the sudden drainage of an ice-dammed lake and when the block melts, the hole it leaves behind is a kettle.