Piedmont Charcoal Kilns - Credit: Wikimedia Commons
The Piedmont Charcoal Kilns in Piedmont, Wyoming, are a remnant of a once-extensive charcoal-making industry in southwestern Wyoming. The kilns were built by Moses Byrne around 1869 near the Piedmont Station along the Union Pacific Railroad. The three surviving beehive-shaped kilns were built of local sandstone about in circumference and about high, with walls. A granite marker reads: Read more on Wikipedia
Source: en.wikipedia.org