| | Dave and Barb at Hot Spring adjacent the Rio Grande River | |
| | | Barb at Hot Spring adjacent the Rio Grande River | |
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| | Another View of Hot Springs | |
| | | Water Bubbling Up in the Hot Spring | |
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| | Hot Spring adjacent the Rio Grande River | |
| | | Rio Grande River with Mexico in Background | |
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| | Barb at Rock Cliff on the trail to the Hot Springs | |
| | | More Prickly Pear on Rock Cliff | |
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| | Ocotillo Growing on Rock Cliff | |
| | | Flowering Rock Nettle on Rock Cliff | |
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| | Steep Cliff adjacent the Rio Grande River | |
| | | Prickly Pear on Rock Cliff | |
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| | Tunnel in Big Bend Natinal Park | |
| | | Description of Boquillas Canyon | |
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| | Barb at Boquillas Canyon Sign | |
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| | Geology of Boquillas Canyon | |
| | | Description of Canyon Cutting | |
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| | Another View Rio Grande from Boquillas Canyon Viewpoint | |
| | | Boquillas Canyon Trail Sign | |
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| | Rio Grande from Boquillas Canyon Viewpoint | |
| | | Burros on Mexico Side of Rio Grande | |
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| | Herding Burros on Mexican Side of River | |
| | | Flowering Torrey Yucca on the way out of Big Bend | |
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| | Rafts on Mexican Side of River | |
| | | View of Rio Grande River at Boquillas Canyon | |
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| | Another view of Rio Grande from Boquillas Canyon Viewpoint | |
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