A small patch of prairie sits largely unnoticed off a desolate road in southwestern South Dakota. Nearby are hundreds of grave sites — many belonging to Native Americans massacred more than a century earlier.

James Czywczynski is trying to sell the 40-acre fraction of the Wounded Knee National Historic Landmark and another 40-acre parcel for a total of $4.9 million.

The assessed value of the properties is less than $14,000.

Wounded Knee is where 300 Native Americans were killed by the 7th Cavalry in 1890.

Czywczynski has given the Oglala Sioux Tribe until Wednesday to agree to the price or he will open it up to outside investors.

But tribal members say he is trying to profit off their suffering.