Big Horn Mountains, Mountain range in northern Wyoming and southern Montana, United States.
The Big Horn Mountains form a major range stretching across northern Wyoming and southern Montana with peaks exceeding 13,000 feet. The massif is characterized by forests and alpine meadows that extend over hundreds of miles.
The range formed approximately 70 million years ago during a major mountain-building event and displays rock layers from several geological periods. These tectonic forces shaped the structure we see today.
The name comes from the bighorn sheep that inhabit the higher elevations and define the character of the range. These animals shape how people experience the mountains and remain a defining feature of what visitors encounter here.
The area offers numerous hiking trails through forests and to higher peaks with varying difficulty levels for different abilities. Visitors should be prepared for rapid weather changes at higher elevations and come equipped accordingly.
An active glacier on one of the highest peaks preserves ice from earlier cold periods and shows geological changes over millennia. The lakes and basins surrounding it bear witness to ice's former reach.
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