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Trench warfare is a type of land warfare using occupied lines largely comprising military trenches, in which combatants are well-protected from the enemy's small arms fire and are substantially sheltered from artillery.
The Mariana Trench is an oceanic trench located in the western Pacific Ocean, about 200 kilometres (124 mi) east of the Mariana Islands; it is the deepest oceanic trench on Earth. It is crescent-shaped and measures about 2,550 km (1,580 mi) in length and 69 km (43 mi) in width.
Hadal trenches are thought to have formed from the slow subduction of older, dense lithosphere. [22] This is supported by the distribution of hadal zones, most of which in continent-ocean subduction zones. The most well known hadal trench is the Mariana trench, but there are hadal trenches distributed around the world's oceans.
From prison to the trenches: Inside Ukraine’s attempt to turn inmates into soldiers. Daria Tarasova-Markina, CNN. June 13, 2024 at 9:30 AM.
The scene could be 3,000 km (1,860 miles) away in Ukraine's Donbas region, but instead some 2,000 Ukrainian conscripts and veterans are training in the muddy fields of France's eastern Marne ...
The Mariana Trench is the deepest point on Earth, void of light with the pressure of 48 jumbo jets. Yet life finds a way to survive. Very weird life.
Sonar mapping of the Challenger Deep by the DSSV Pressure Drop employing a Kongsberg SIMRAD EM124 multibeam echosounder system (26 April–4 May 2019). Challenger Deep (CD) is the deepest known point in the Earth's seabed hydrosphere, a slot-shaped valley in the floor of Mariana Trench, with depths exceeding 10,900 meters. [1]
Mining saw a particular resurgence as a military tactic during the First World War, when army engineers attempted to break the stalemate of trench warfare by tunneling under no man's land and laying large quantities of explosives beneath the enemy's trenches. As in siege warfare, tunnel warfare was possible due to the static nature of the fighting.