Cachoeira da Neblina is considered the tallest waterfall in Brazil, dropping an extraordinary 450 meters along the Rio do Soberbo in the municipality of Guapimirim, Rio de Janeiro, within the Serra dos Órgãos region.

Its height was officially measured in 2019 during an expedition that required researchers to push more than two kilometers into dense forest to complete the survey.

The waterfall sits entirely within a protected environmental preservation area, and public visitation is not permitted. Access is restricted to researchers and environmental scientists conducting authorized work in the region.