It's up the gulch, you say?
The gold occurs in alluvial deposits designated as gulch-, bar-, beach-, tundraand bench-placers.
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 development of Montana was scarcely begun when the discoveries of gold were made at Bannack, Beaverhead Valley, in 1862, at Virginia city, Alder Gulch, in 1863 and at Helena, Last Chance Gulch, in 1864.
The surrounding country abounds in goldand silver-bearing quartz deposits, and it is estimated that from the famous Last Chance Gulch alone, which runs across the city, more than $40,000,000 in gold has been taken.
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.
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.