TALLAHASSEE, Fla. – The Miccosukee Tribe of Indians of Florida is seeking to join a federal lawsuit aimed at halting the construction of a new immigration detention facility in the Everglades, which tribal members consider their sacred ancestral homelands.

Miccosukee leaders had already condemned the facility. But the filing Monday of a motion to intervene in the case initially brought by environmental groups signals a new level of opposition by the tribe, which is also a major political donor in the state.

Republican Gov. Ron DeSantis’ administration rapidly built the facility, which state officials have dubbed “Alligator Alcatraz,” on an isolated, county-owned airstrip inside the Big Cypress National Preserve, about 45 miles (72 kilometers) west of downtown Miami.

The Miccosukee have lived on and cared for the lands of Big Cypress “since time immemorial,” the filing reads, noting that the tribe played an integral role in pushing for the creation of the national preserve, the country’s first.

“The area now known as the Preserve is a core piece of the Tribe’s homeland. Today, all of the Tribe’s active ceremonial sites and a significant majority of the Tribe’s traditional villages (sometimes known as “clan camps”) are within the Preserve,” the filing reads.

The lawsuit originally filed by the Friends of the Everglades and the Center for Biological Diversity seeks to halt the project until it undergoes a stringent environmental review as required by federal and state law. There is also supposed to be a chance for public comment, the plaintiffs argue.

As of Tuesday afternoon, the judge in the case was yet to act on the groups’ requests for a temporary restraining order and preliminary injunction.