It's up the gulch, you say?
In 1863 the famous Alder Gulch in Madison county was discovered and in the next year, Last Chance Gulch in the south of Lewis and Clark county.
The Helena crystals are of tabular habit, being composed of the basal pinacoid with a very short hexagonal prism, whilst at Yogo Gulch many of the crystals affect a rhombohedral habit.
The city is built picturesquely on the sides of a gulch, down which runs the Missouri & North Arkansas railway.
The principal localities are at Missouri Bar, Ruby Bar and other places near Helena, where they were first worked, and also at Yogo Gulch, near Utica.