06/05/2026
Ever driven west of Oacoma on I-90 and wondered what those mysterious brick and concrete structures are out in the hills? 🤔
These fascinating remnants are part of an old mining operation dating back to the early 1900s, when the area was bustling with activity tied to mineral mining in central South Dakota. Today, the structures remain as a unique reminder of the region’s rich and rugged history.
A special thank you to Michael Zimny for capturing these incredible photos of the site and helping showcase one of Oacoma’s hidden historic curiosities. 📸
Read the full story from South Dakota Public Broadcasting here:
https://www.sdpb.org/rural-life-and-history/what-the-heck-are-those-brick-and-concrete-structures-off-the-i-90-west-of-oacoma
Have you seen these structures in person before? Share your thoughts or stories below! 👇