 Ramba uchiverenga ndima ino - Kubva muna 1986 kusvika muna 1992 McNamee akashanda senhengo yebhodhi revatungamiriri veGreater Yellowstone Coalition uye sachigaro wayo kubva muna 1987 kusvika muna 1989. Nguva yokupedzisira yaibatanidza moto weYellowstone wa1988nguva yakaoma yokuchengetedza muRocky Mountains, nokuti basa romoto womusikirwo mukutsiva kwezvakatipoteredza rakanga risinganyatsonzwisiswi kunyange nevanochengetedza zvinhu zvipenyu vakawanda. Akanga ari mutori rutivi anoshingaira kweanopfuura makore gumi munhamburiko yokudzorera mhumhi yakasviba kunzanga yezvinhu zvipenyu yeYellowstone. 