That's not an easy or obvious question to answer.
The world's deepest cave is Voronya or Krubera Cave, in the Urals I think? but it's not ever so long. Caves like that plunge steeply via many shafts linked byrelatively short horizontal passages.
The world's longest cave is the Flint Ridge Cave/ Mammoth Cave system, linking severals other caves too with a total of somewhere near 400 miles of passages; but I don't think its vertical range (as cave depths are oftenmore accurately described) is ever so great.
Incidentqally its name has nothing to with Pleistocene animals. "Mammoth" was the adjective for the large passages near its main entrance. (ref: Wikipedia)
In the UK, Ogod Ffynon Ddu, in South Wales, has a VR of just over 1000feet in its 28 miles of passages; I think the Three Coutnies System in NW England beats it indepth and length but it's not easy tryingto find this sort of information thanks to the internet!
The depth of the largest known cave, Krubera Cave in the Republic of Georgia, is approximately 2,197 meters (7,208 feet) deep. However, there may be undiscovered caves that are deeper.
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.
Vietnam is often cited as having the most caves in the world, with over 2,000 discovered so far. The Son Doong Cave in Vietnam is known as the largest cave in the world by volume.
Karst landscape is a type of landscape where caves, deep valleys, and sinkholes are common. This type of landscape is formed by the dissolution of soluble rocks such as limestone, dolomite, or gypsum by groundwater. The result is distinctive topographical features like caves, sinkholes, and underground drainage systems.
The Esa-ala Cave in Papua New Guinea is one of the largest river caves in the world. It stretches over 5 kilometers in length and reaches up to 390 meters deep, making it a significant natural wonder for cave explorers.
The landscape you are referring to is likely characterized by karst topography. Karst landscapes are formed by the dissolution of soluble rocks such as limestone, creating features like caves, deep valleys, and sinkholes. These areas often have unique water drainage systems, as water flows underground through the porous rock layers.
the largest caves are found under the Atlantic Ocean
They are found in caves or deep in the earth.
They lived in deep caves.
The Cumuy Caves is the larest cave system in the world and the largest in the western hemesphere.
Mammoth Cave in Kentucky.
its called KARST TOPOGRAPHY
sea caves are deep natural hollows in a cliff
Definitely no! The largest cave in Europe in length are the Hölloch in Switzerland and the Optymistychna in Ukraine, or in depth it is the Krubera-Voronja Cave in Georgia ( is this really Europe ?), also two caves in Spain, two in France, and one in Austria. For more infos look at http://www.wisegeek.com/what-are-the-largest-caves-in-the-world.htm
Whales live in the deep oceans, not in caves.
Deep Sea Detectives - 2003 Secret Underwater Caves 2-9 was released on: USA: 19 July 2004
in caves and deep under the sea where light wont reach
Deep Sea Detectives - 2003 More Secret Underwater Caves 3-8 was released on: USA: 20 June 2005