Today was day one in Big Bend National Park.  This place is huge.  We drove down to the Rio Grande, took a hike up a big hill/cliff above it, and later drove off on a gravel road which became a bit daunting at times–four wheel drive only. We saw people riding horses across the desert, others canoeing down the river, all sorts of mountains, cactus in bloom, ruined corrals from a extinct ranch, and passed a border control check point–nothing new really.  Used to get checked all the time down near the border. Here are photos I took along the way.