The previous post in this blog described the world class natural area of White Sands National Monument in southern New Mexico. This post describes another amazing geologic feature only forty miles or so northwest of Albuquerque – the Tierra Amarilla anticline. (It is also called the San Ysidro anticline.)
An anticline is where the earth’s crust has been pushed into an upward pointing fold. It is very much like an upside down “V”. When you add in tens of millions of years of erosion you get an amazing array of formations and exposed rock layers. As a result, the anticline is a great place to wander and explore.
With most of the anticline being on public land and its proximity to Albuquerque, the Bureau of Land Management (BLM) has built several miles of trails on top of the anticline that are very popular with mountain bikers. A full description of the trails can be found on page 247 of the 3rd edition of 60 Hikes within 60 Miles: Albuquerque by David Ryan and Stephen Ausherman.