. >> emotions run high when the talk turns to the canal in lake nicaragua. octavio ortega runs an mission against the opponent. he explains what they can expect the chinese start building the canal and they will all have to leave. the reactions are clear. >> we don't have weapons. we take up gloves against the government that is selling off our homeland. >> the 278 kilometer long canal is to cut through nicaragua's hilly countryside. critics say it is a threat to those who live here but more so to lake nicaragua, central america's against freshwater reservoir. cargo ships four times as heavy of those passing through the panama canal art across the lake. they will need a channel 500 meters wide and 30 meters deep. right now the point of the projected channel is just 10 meters deep. octavio ortega is concerned about the freshwater because the ocean and saltwater affluent to the lake -- will flow into the lake. >> we want to know how they are going to prevent the contamination by flood water. no one can tell us that. there will not be any lock on the lake. sonl