Where Two Wild Rivers Meet: The Confluence Below Questa
Did you know that the Rio Grande Gorge near Questa began, in a sense, with the Red River? Scientists with the Bureau of Land Management explain that about 400,000 years ago a closed basin in Colorado's San Luis Valley, holding a lake with no outlet, grew wetter and overflowed to the south. That water drained into the Red River, and as its volume increased it cut down through volcanic rock to form the modern Rio Grande Gorge.