Kenyan conservationists are challenging plans to host a music festival at Hell’s Gate National Park, 100 km outside the capital, Nairobi, on Feb. 14. They say it will negatively impact wildlife in the park, including endangered vulture species.

Organizers expect the festival will attract an estimated 20,000 people. The Kenya Wildlife Service (KWS), the government agency charged with conservation and management of wildlife, also plans to host the East African leg of the World Rally Championship in Hell’s Gate in July.