"Caveman" is something of a Victorian idea; there is little evidence that early humans lived in caves - just as nowadays, practically no humans live in caves.
Answer:
The notion that there was an "age" of cavemen is more of a product of evolution, with its faith, beliefs and teachings of "ages" of human development, than reality.
Throughout history, if a cave was discovered... someone probably resided there for awhile. So, technically... cavemen are still around...
...and according to prophecy, cave-dwelling will become all the rage when the world sees the signs of Jesus' return coming to pass:
"...then the kings of the earth, the princes, the generals, the rich, the mighty, and every slave and every free man HID IN CAVES and among the rocks of the mountains. They called to the mountains and the rocks, 'Fall on us and hide us from the face of Him who sits on the throne and from the wrath of the Lamb! For the great Day of Their wrath has come, and who can stand?" (Rev.6:15-17 NIV)
As of 2018, it is 28 years ago.
A caveman.
As of 2018, 1870 is 138 years ago.
1450 was 561 years ago, and I am saying this in the year 2011.
It depends on what year you are talking about. The range is from 62-71 years ago.