Jun 5 - River Bed

Eroded dried up river bed in Sierra Organos.

Jun 5 - Lizard

While climbing the mesa I saw some lizards. I believe both these are young Spiny lizards.

Jun 5 - Sierra Organos

"Parque Nacional Sierra de Órganos" on the Zacatecas-Durango border. So called because the tall jagged mesas resemble church organ pipes.  Here's a few photos I took while attempting to climb one.