SIOUX FALLS, S.D. (AP) – Several Native American tribes have raised more than $1 million towards buying a prime piece of real estate in the Black Hills of South Dakota.

Rosebud Sioux spokesman Alfred Walking Bull tells The Associated Press that the tribe is now allocating $1.3 million to purchase the privately owned land that they consider sacred. That’s far more than the $50,000 initially promised. Online donations bring the total to $1.4 million.

Tribes making up the Great Sioux Nation have come together to try to buy the land at auction Saturday. They estimate it could take from $6 million to $10 million.

The site plays a key role in the tribes’ creation story, and members fear new owners would develop the land they call Pe’ Sla.