This is known as an oceanic trench.
The term "seismic sea wave" has been found in geological and oceanographic texts, and typically is another term for a tsunami. Earthquakes at underwater subduction zones (where one tectonic plate moves beneath another) are the leading cause of tsunamis. Not all tsunamis are caused by earthquakes, however; other causes may include underwater volcanos, landslides, and underwater explosions (such as nuclear devices).
Subduction
Residents of the Yorkshire valleys are known as "Yorkshire Dalesmen" or "Dalesfolk".
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there are no volcanoes it is not along an ocean coastline
Sonar
No oceanic coastline Absence of volcanic activity
Indications that a mountain range was not formed by subduction include the absence of deep oceanic trenches, lack of volcanic activity, and the presence of diverse rock types that are not associated with subduction zones. Additionally, the orientation of the mountain range may not align with the typical pattern of subduction-related mountain building.
Literally, EVERYWHERE! Hawaii is a series of volcanic mountains, with lush valleys. If you are not on a mountain, you are looking at one. Directions are given in terms of "towards the mountains" or "towards the ocean".
hot spring