The snippets describe Grutão Ecoparque (also known as Grutão dos Índios), located about 26 km from Caxias do Sul in Rio Grande do Sul — not a campground on Rio Nicolau as specified.

However, the site does include a camping area, so a description of that component is warranted. Grutão Ecoparque sits roughly 26 kilometers from Caxias do Sul, with the final 7. 5 kilometers on an unpaved road.

The park takes its name from a large cave that once served as temporary shelter for Kaingang indigenous people, who frequented the area during the pine-nut season.

The cave measures approximately 10 meters deep and 50 meters wide, and a waterfall of roughly 30 meters drops nearby.

The ecopark offers a camping area alongside its day-use attractions, which include self-guided trails, natural river pools, and barbecue facilities. The surrounding rock — riodacite, a volcanic formation — also draws climbers.

Cell service from major carriers is available on-site, and Wi-Fi is offered as well.