El Marmol was an onyx mining site. This school house is built of onyx. Someone tried to restore it, but the last time I saw it, it was in far worse shape than in the pic....Sad...
......Westy...
El Marmol was a big operation at one time..The onyx was freighted to the coast, loaded on boats and shipped to Alta California. There it was mad into all sorts of objects..Plastics killed the whole operation. Last I knew only a little is being mined by the people of Rancho Sonora and made into wind chimes...Again a sad story..
.....Westy.....