Big Bend National Park: An International Biosphere Reserve

Journey Mapped

Mountains of immense lava rock formations, wide Chihuahuan desert expanses that were once ancient dinosaur-fossil-filled lake beds, and limestone layers forming deep, narrow canyons carved by the Rio Grande River are home to protected wild animals like the black bear, mountain lion, javalina, and coyote, along with the Colima Warbler and 400 other songbird and…

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