What we found at the Smithsonian’s Lost Museum

The Smithsonian’s National Museum of Natural History’s exhibit about the ancient cave people known as the San Carlos tribe has been closed for several months.

The exhibit was supposed to open March 2 but it has been postponed until the fall, after an investigation by the museum’s scientific team found evidence of human activity that has not been properly disclosed, according to Smithsonian spokesperson Lauren Johnson.

The exhibit, which features a collection of ancient cave paintings, was originally supposed to reopen in October.

But after the San Marcos tribe sued to block the opening, the museum decided to close it for at least six months until the court case was resolved.

The Smithsonian was forced to cancel the exhibit for six months to accommodate the lawsuit.

This story has been updated to reflect that Smithsonian spokesman Johnson said the exhibit was closed until the San Antonio River reopened.