Ottos Corner (part of the Otto/MacDonalds Campsite) is a DOC campsite situated on the northern end of Lake Mapourika, roughly 12–15 km north of Franz Josef township via SH6.

The site offers 20 non-powered tent sites in a large, easily accessible area a short walk from the lake's shore. Facilities include flushing toilets, tap water, a shelter with sinks, and a boat ramp.

Activities centre on the lake itself — boating, trout fishing, and swimming in waters that warm considerably during summer due to the surrounding rainforest's tannin-darkened shallows. Phone signal is limited.

Dogs are not permitted, and freedom camping is prohibited. Bookings are required year-round.