found: Work cat.: Valley of the hoodoos [VR](from Karvonen Films in the Treasures of the wild series about the Milk River Valley rock structures)
found: Merriam-Webster Online, April, 17, 2000Hoodoo (a natural column of rock in western No. America often in fantastic form)
found: DesertUSA.com Desert Geologic Features(Hoodoo: A bizarre-shaped column or pillar caused by differential erosion on rocks of different hardness.)
found: Cheshire, G.B. The Desert's hoodoo heart, 2000(about Bryce Canyon National Park)
found: Online, April 17, 2000, Virtual Field Trip of Milk River:Hoodoo page ("A hoodoo is a rock formation ... caused by differential resistance to erosion")
