“…As a bulge within the Missouri River drainage basin near, but not on the deep "hole's" southwest rim, the new paradigm requires southor southeast-oriented melt water floods to have flowed across what must have been a rising Bighorn Mountain range. Previously published new paradigm papers among other things demonstrate how detailed topographic map evidence suggests large south-and southeast-oriented floods flowed across a rising Wyoming-South Dakota Black Hills upland (Clausen, 2018b), a rising Wyoming Laramie Range (Clausen, 2018c), rising Montana Lewis and Clark and Sawtooth Ranges (Clausen, 2019), a rising Montana Boulder Batholith region (Clausen, 2017a), rising Montana Beaverhead, Centennial, Pioneer, and Anaconda Mountain ranges (Clausen 2017b) and the eastern Powder River Basin (Clausen, 2018d) and also demonstrate how the southeast Montana north-oriented Powder River valley eroded headward across massive southeast-oriented floods (Clausen, 2018e). The study reported here seeks to determine whether detailed topographic map evidence in the high elevation southern Bighorn Mountains region can be interpreted in similar ways.…”