Visit the Jemez Soda Dam

For the past 7,000 years, calcium carbonate at this spot in northern New Mexico. And after all those centuries, it has formed into a natural bridge across the Jemez river, roughly 300 feet in length. 

Drive northeast from Jemez Springs on New Mexico State Route 4. Just under 2 miles later, the formation is on the right side of the road, but parking is immediately following on the left side. Take care crossing the highway from the parking lot.

You can explore all sides of the Soda Dam, including walking onto the top from the road and scaling down the backside toward the river. 

There is moss, calcified stalactites, and interesting caverns in the formation. 

The Soda Dam is a perfect pit stop on the road up to the Valles Caldera National National Preserve.