Cave depths are measured from the altitude of the upper most portion of the cave with the altitude of the lowest portion of the cave passage. In the case of a lava tube cave, the passage is related to the lava flowing down the slope of the landscape. Since a lava cave can be over 8 km long, it is possilble that the upper portion of the cave is over 300 meters higher than the lower portion of the cave. It can be very strenous to travel from the top of such a cave to the bottom and possibly back out the entrance from which you came. Ref: http://www.caverbob.com/lava.htm
A lava tube cave can still be considered deep if it extends far below the surface, even if it is not deep in the sense of being far underground. The depth of a cave can be measured by how far it extends vertically from its entrance, not just by its proximity to the surface. Additionally, the size and complexity of the cave system can also contribute to it being considered deep.
The cave system of Lascaux is approximately 200 meters long and consists of several chambers and corridors. The main part of the cave, where the famous prehistoric paintings are located, is about 20 meters below the surface.
The Shenandoah Caverns cave system is approximately 60 feet deep. The main cavern is about 17 feet tall and has various passages and chambers at different depths within the cave network.
Ellison Cave was formed by the erosion of the rock by water over millions of years. The cave was created as groundwater seeped through the limestone bedrock, dissolving and creating intricate passageways underground. Over time, the cave continued to grow and develop into its current size and complexity.
The Waitomo Caves system is over 250 kilometers in length and around 120 meters deep. The main cave, known as the Glowworm Cave, is approximately 1.6 kilometers long.
A cave is a natural underground space that is typically large enough for a person to enter, while a chasm is a deep, steep-sided opening in the Earth's surface. Caves are formed through various geological processes, while chasms are often created by erosion or tectonic activity.
Rivers' surface located in deep valleys can be below of the ocean surface. Furthermore, there are underground rivers which certainly are below sea level, depending on how deep such rivers are placed below-ground.
yes
Igneous rock can form deep below the surface as intrusive igneous rock, or on or near the surface as extrusive igneous rock. X Answer is: Igneous
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Deep currents
Igneous rock can form deep below the surface as intrusive igneous rock, or on or near the surface as extrusive igneous rock. X Answer is: Igneous
The water that forms far below the surface is called a Deep Current.
4,000 to 6,000 km below the ocean surface
30 feet
igneous