WILLIAMSON COUNTY, Texas — Williamson County is celebrating 10 years of its Regional Habitat Conservation Plan.

The county created the plan in 2008 and its funded by federal grants.

The goal is to protect a list of animal species, including the Bone Cave Harvestman and Coffin Cave Mold Beetle, which are found in some caves in the area. The county currently has more than 900 acres of land and preserves about 36 caves.

In celebration of the anniversary, officials opened Cobb Cavern. The cave is about a mile long and is one of the largest in the state. Scientists go down in the caves annually to monitor the species.

"Just to make sure that something hasn't happened that has pushed these populations into a tailspin for some reason," Kemble White with Cambrian Environmental said.

The conservation plan also collaborates with developers.

"The county is able to participate developers, meaning the state, the county, school districts, municipal utility districts, cities, towns and individual developers to manage their interaction with the endangered species that exist in the county," Gary Boyd with the Williamson County Conservation Foundation said.

The official anniversary is Sunday, October 28.