A national park in Michigan has just become the first to implement heavy-duty wheelchairs as a means of allowing disabled visitors to enjoy their trails. The “track chair” is a wheelchair that has been equipped with treads to navigate the steep hills and sandy trails.
“About half the park is designated wilderness so in those areas we can’t do a lot of maintenance or changes [to increase accessibility]. So the better option is to have a vehicle that can take the person into these areas so they can experience the trail as it is without having to make major modifications.”
https://www.goodnewsnetwork.org/first-us-park-to-offer-heavy-duty-wheelchairs/