The Calabacillas Arroyo on the west side of Albuquerque empties into the Rio Grande about a half mile north of Paseo del Norte. It is the largest arroyo on the west side of the Rio Grande in this area, having a length of nearly 17 miles and a watershed of nearly 77 square miles. AMAFCA has stabilized the critical lower part of the arroyo's channel. This lower section includes artificial fossils in the channel walls. The largest and most easily found of these artificial fossils is fondly known as the "Arroyosaurus" but it really represents a Tyrannosaurus rex. Can you find the other fossils?
Calabacillas Arroyo Scavenger Hunt
Start here, by printing the Scavenger hunt brochure (additional brochures are usually available at the site). Visit the site and see how many of the artificial fossils you can find!
After your hunt, check back here to see where some of the fossils on the north side of the channel are! Scavenger hunt answer key. (South side fossils not pictured; some north side fossils are obscured in the composite photo.)
How to get to the parking area: Northbound on Coors Blvd NW, north of Irving, take a right on Westside Blvd NW. The entrance to the Calabacillas Arroyo access is on the left, where the road intersects with Riverfront Drive. Follow the access road to the right to the parking area, where you will find the informational sign. Map
(Brochure is a pdf file - you will need the free Adobe Acrobat Reader to open it. Most computers come with this program already installed.)
Artist's Statement for arroyo artwork and project sign and poster
The artist, Michael Wallace, provided us with this artist's statement.