There is no particular year stated for prehistoric human events. The main reason being, very little evidence that can pinpoint an exact year can not be found. Instead of years archaeologist use ages. The artifacts found for early humans who did live in caves was during the "stone age" which was around 40 to 80 thousand years ago.
Waitomo Caves in New Zealand attract around 500,000 visitors each year.
Four million foreign tourists visit The Republic of Chile every year.
The Marble Arch Caves Global Geopark in Northern Ireland typically receives around 125,000 visitors annually.
I think 2billion people
50000
There is no year 0 in the gregorian calender.
10 million
Approximatley there are about 47,817,000 people living in Korea but that is in the year 2005. +___+ ADRIANA
Prehistoric Times it was Discovered by cavemen
Lead is known from prehistoric times.
Lead is known from prehistoric times.
Lead is known from prehistoric times.