Travertine is a form of limestone deposited by mineral springs, especially hot springs. Travertine often has a fibrous or concentric appearance and exists in white, tan, and cream-colored varieties. It is formed by a process of rapid precipitation of calcium carbonate, often at the mouth of a hot spring or in a limestone cave. In the latter, it can form stalactites, stalagmites, and other speleothems. It is frequently used in Italy and elsewhere as a building material.
The idea for this article hit me while I was writing this post about awesome landscapes. I was doing some research, and when I found the amazing things hot water springs can create, it was obvious that this article had to come. Grand Prismatic Spring Measuring about 250×380 feet, and being the largest hot water [...]