This land is situated on the eastern slope of the Continental Divide.  The main range of the Rocky Mountains runs through the west side of it, a portion of the Bird Tail Divide on the northeast and and the southeast boundary borders the Big Belt Range.  It has many kinds of riches.  Some of the precious resources were the gold strikes, farming land and hunting grounds.

L & C County hold the home to Fort William Henry Harrison, which was first called Fort Harrison and then it was realized that there was a Fort already named that, so it took on the whole name of a man that served in the military and in politics.  This fort was abandoned in 1913 and now is being used by the Veterans Administration and also as military training grounds.

It's first county seat was Silver City and then Helena became the county seat after the county was renamed Lewis and Clark.