Research Cave

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Research Cave
Nearest city Portland, Missouri
Governing body Private
NRHP Reference # 66000415
Significant dates
Added to NRHP October 15, 1966[1]
Designated NHL July 19, 1964[2]

Research Cave is a Native American archeological site near Portland, Missouri.[1] Locally known as "Arnold-Research Cave" or "Saltpetre Cave", the cave is located in an outcrop of sandstone approximately 2 miles (3.2 km) north of Portland.[3]:2 it was occupied intermittently for over 8,000 years. It has been recommended for de-designation as a National Historic Landmark due to looting.[2]


  1. ^ a b "National Register Information System". National Register of Historic Places. National Park Service. 2008-04-15. 
  2. ^ a b "Research Cave". National Historic Landmark summary listing. National Park Service. Retrieved 2008-06-17. 
  3. ^ Shippee, J.M. "The Archaeology of Arnold-Research Cave Callaway County, Missouri". Missouri Archaeologist 28 (1966).