One thing we always do with my father-in-law is go for a walk or hike. Last week, when he and my mother-in-law were down for a spring break visit, we took a walk at the El Dorado Nature Center, just a short drive from home and right next door to the SPCA where all our dogs were adopted from.

What’s interesting about the El Dorado Nature Center, a part of El Dorado Park, is that it started out as a relatively flat piece of land. The topography was created out of soil that had been removed to build the San Gabriel Freeway.

This is an early photograph of the nature center when it first opened in 1969:

Here are some photographs from April 17, 2025: