Hawaii park officials have announced that starting in 2018 only four companies will be allowed to bring vehicle-based tours into Haleakala National Park.
The Maui News reports the Tuesday announcement stated Haleakala EcoTours, Polynesian Adventure Tours, Skyline Eco Adventures and Valley Isle Excursions were awarded 10-year contracts to operate in the park.
This year, there are 16 tour companies that are allowed to go through the park.
Haleakala National Park officials have been working on reducing the number of tour companies in hopes of lessening visitor impact on the park since 2012. The park is home to the dormant Haleakala Volcano and endangered Hawaiian geese.
The park had over 1.2 million visitors in 2015.