Not very, judging by the very sparse information I could find, and devoted really to publicising it as a show-cave.
The cave swallows a river that resurges only 1km away in a straight line (ignoring any underground meandering), and since Belgium is notever so hilly, I doubt the cave's vertical range is much more than a few tens of metres.
We'd need to see a survey or technical description of the cave to find out!
They are found in caves or deep in the earth.
They lived in deep caves.
its called KARST TOPOGRAPHY
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
Deep Sea Detectives - 2003 More Secret Underwater Caves 3-8 was released on: USA: 20 June 2005
Caves that go straight down are typically referred to as vertical caves or potholes. These caves are formed by a combination of geological processes such as water erosion or volcanic activity, creating deep vertical shafts in the ground.
They can be be any depth from practically 0 (practically horizontal) to the world's deepest, the 1710m deep Krubera Cave, in the Ukraine.
White tigers get shelter in deep caves or in deep dark shadows to avoid contact with any other animal.
Caves are usually natural formations (although some are man made) which bury deep into rock. Windows are man-made objects.
Caves are dark because they are deep underground, away from sources of light. Light from the sun does not penetrate deep into the earth, so once you are inside a cave, there is no natural light source to illuminate it.
Their scattered all over Runescape. Some are in the wilderness others are in deep caves.