Palo Duro Canyon, the second largest canyon in the United States, is unofficially known as what?

I visited it once and followed a friend who said the sign that said "don't go past here after 2pm or without a gallon of water each" was for dummies. we got lost and thirsty! very pretty place though.

The flag was a great hint!!

Player #30983725, "Have"is correct as it goes with noted painters as the subject of the sentence, Georgia O'Keeffe. Check your grade school grammar.

And then I misspell O’Keeffe...good grief!