Rock caverns are not built they are eroded out of solid rock by natural processes.
a long time
it take 2 days
It took 273 days for them to build the pyramid
It takes a long time...
it took 27years to build interstate 75.
In 691 AD, Abd al-Malik ibn Marwan built Dome of the Rock. It took 3 years to build.
No. All you need is a large, smooth rock, some soap, a lot of water, and the clothes. It take a long time to build a rock, though.
how long does it take to build a asimo
how long did it take to build the half moon
how long did it take to build the scottish parliment?
how long did it take to build cabot tower
hs2 will take 15 years to build
how long does it take to build a beam bridge of 2400 sq ft
How long did it take to build st James cathedral london
it took 3 years
Prairie Isle, then take a wagon trip to the north east rowboat and take a trip to cavern :).
a long time