04102026Fri
Last updateThu, 26 Mar 2026 6pm

rectangle placeholder

Great Balls of Stone! What to expect if you visit Las Piedras Bola in 2013

Naturally formed giant balls of stone are a rare phenomenon in most parts of the world, but not on a mountain top near Ahulaluco, 75 kilometers west of Guadalajara, where hundreds of them lie nestled in a bed of soft volcanic ash. It’s even said that these are the largest megaspherulites (their scientific name) in the world, for which reason I decided to go measure a few of the biggest I could find.


Journey to Thuwal: A Saudi university looks at Arabia’s Caves

In 2009 I heard rumors that a new university had opened its doors in Saudi Arabia. It was said that King Abdullah University of Science and Technology (KAUST) was vibrant, dynamic, staffed by the world’s greatest scientists teaching the world’s most brilliant students, a truly international university which its founder, King Abdullah, Arabia’s reigning monarch, envisioned as “a bridge between people and cultures … and a beacon for peace, hope and reconciliation.”

Where to turn when there’s no place to go

The first town you drive through heading west from Guadalajara on Highway 15 is La Venta del Astillero, centuries ago a major source of lumber for construction projects in the City of Roses and today apparently no more than a set of speed bumps along the road to Nogales … apparently.