Used Rarely. rolling plan is in the lower 50% of commonly used words in the Collins dictionary
Most travertine is 3/8 of an inch thick but some other larger stones may be a 1/2 inch thick or more. 24x24 is usually 1/2 in thick an can even be as thick as 1in. 24in Travertine is extremely heavy , some pieces can weigh as much as 50 pounds. Thus making it very difficult to install and cut.
Clinging to moss and rocks in the water, travertine has built up over several millennia to form waterfalls up to 70 metres (230 ft) in height. Today travertine is used extensively as a building material and has been used by the Romans since the middle ages.