Along the western side of the Colorado River Valley between Blythe, California, and Parker, Arizona, the land slopes where it meets the Big Maria Mountains to a flat expanse of undeveloped desert.

Near the lower Colorado River in eastern California, the Blythe Intaglios are giant designs, man-made long ago by engraving, tamping or scraping away the desert pavement, thus exposing the lighter ...

You might have seen aerial photos of geoglyphs in Peru and Chile or even those in Great Britain and Australia, but we have equivalent cultural treasures here in the United States. A geoglyph is ...

Alfredo Acosta Figueroa in California’s Palo Verde Valley, where ancient geoglyphs are threatened by huge solar projects. One of the Blythe Giant Intaglios, which was fenced for protection after it ...

The figures scratched into the earth north of Blythe, Calif., remain a mystery. When were they carved and why? They are best seen from the air, but they also can be seen from the ground, by driving ...

The three human figures and two animals that make up the Blythe Geoglyphs - or Blythe Giant Intaglios - are enormous. So big in fact, that they can’t be fully appreciated from the ground. But the ...

BLYTHE • They're one of the few unsolved mysteries of modern archaeology — pieces of history preserved in the desert on a mesa of the Big Maria Mountains north of Blythe. And most recently, they have ...

After a rough ride through narrow desert washes, Alfredo Figueroa came to a clearing and ordered the vehicles to halt. The giants were waiting. Figueroa strode briskly across the plain. Before him, ...

On a recent adventure, I stopped at a gas station and started filling the tank. A gentleman at a nearby pump smiled over at me. Actually, I believe he was smiling, since the corner of his eyes ...

After a rough ride through narrow desert washes, Alfredo Figueroa came to a clearing and ordered the vehicles to halt. The giants were waiting. Figueroa strode briskly across the plain. Before him, ...