Action City, an indoor/​outdoor amusement park on Eau Claire’s south side, is planning a major expansion next year, according to a news release.

A motorized zipline suspended up to 120 feet in the air will be installed in summer 2017 over the outdoor miniature golf course. At the same time, the existing oval go-kart track will be replaced with a new course accompanied by a new fleet of go-karts.

An indoor expansion of 35,000 square feet will include the installation of a trampoline park with obstacles inspired by the TV show “Ninja Warrior.”

Action City’s current 55,000-square-foot facilities will be increased to 90,000 square feet when the expansion is complete, the news release stated.

The business already is in the process of obtaining necessary permits for the new features.

Action City, 5150 Fairview Drive, is owned by Shirley and Tom Hahn. The amusement center is attached to the Metropolis Resort hotel and Chaos Water Park.