Toxic mud destroys forests in Brazil
25 November 2015 Last updated at 17:21 GMT
Toxic mud has covered several towns in Brazil after a dam holding the mud collapsed earlier this month.
The mud has destroyed forests over a large area and also the village of Bento Rodrigues close to where the Fundao dam collapsed.
Around 600 people who live nearby have been in temporary accommodation since the accident.
Ayshah has more.