Cave Exploring

It may have but I would think it would be a very limited ecosystem as the cave is noted for being very cold, with thick ice deposits.

Caves are made by water and wind carving into the Earth's crust.

Cave men and other prehistoric humans like Neanderthals would have used the colours: red and black.

Red was used because it was easily gathered from blood. It was also a strong colour, so it did not wash away very easily. Blood stains very well, so it would have been good for the stone wall of a cave.

Black was a colour easily collected from rocks. Cave men would have used black also because the colour is strong and easily assessable.

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Red: Blood - wrong. Blood turns brown and degrades very quickly. The red - and yellow - pigments are ochre (clay-like iron compounds). Black: charcoal, though I dare say some caves may have yielded manganese "wad", which is a black, silt-like deposit. The artists also chose cave walls that stayed dry!

Sure. There are natural pools and streams created by the water that made the cave in the first place.

Alaska

Park near where 360 and Mopac come together, walk north towards barton springs 30 minutes or so, it will be on your right.

There is an important difference between Risk & hazard. Caves present objective hazards but the risk of them causing an accident, and the potential severity of the outcome is far more subjective and difficult to assess. It depends greatly on the cave and natural conditions, and even mmore so, on the individual at the time.

Judging by cave rescue organisation annual reports and by personal experience....

Falling off a climb or even slipping off a boulder - the most common hazard and greatest risk.

Falls due to equipment failure: very rare. Modern caving equipment is subject to stringent quality regulations, and any kit failure now is almost certainly due to poor use, poor maintenance or neglect.

Water and cold: drowning, hypothermia. Modern techniques and clothing are designed to minimise the risk, particularly by rigging pitches (vertical drops) clear of the waterfall. It won't account for cavers themselves misjudging the obstacle and being over-confident in trying, for example, to swim across deep pools without suitable clothing and bouyancy aids.

Floods: if the water does not drown you the cold might kill you if you are trapped in a dry passage but beyond the flooded section. Avoided by knowing as much as possible about the chosen cave and its area, and not going down floo-prone caves when the weather is wet or mayy become so. It is very sobering to stand outside a cave and see silt on the trees some fifty feet above the entrance itself...

Lost: yes, cavers occasionally do become lost in complex systems, though it's not very common. Avoided by care, taking a copy of the survey or description and looking at the ladmarks as you go. No, in case you are wondering, you DO NOT mark the junctions with arrows etc on the walls, though small, temporary cairns you remove on exit may be permissable with consideration for the cave and other cavers. Nor, with one exception, do you use guide-string - unless you are a cave-diver... in which case you would not have asked. The exception is laying a guide-line to mark the safest route through a boulder-choke...

Which brings us to -

Things falling on you. It can happen but is rare. A greater hazard is movement or collapse of unstable boulders or loose slopes. Having said that, I recall reading of an American caver struck and injured in the vertical shaft entrance of one cave, by, of all things, a falling racoon!

Lastly and most importantly... YOU! Your physical and mental ability on the day, the care you take of your equipment and of yourself, your knowledge of the cave and weather conditions, and so on.

what are writing found in caves called?

Stalagmites

Spelunkers

dfghjhgjkldfjjhkl

Stalagmite.