A new trailer house has been installed at Osayama Auto Campground in the Osa area of Niimi, Okayama Prefecture. It is equipped with a kitchen, toilet, bathroom and air conditioning, allowing stays without a tent; a loft is also included. Nearby is Osa Genryu Park, where canoeing is available. Travel times: 15 minutes from Osa Smart Interchange to Osayama Auto Campground and 20 minutes to Osa Genryu Park.