The Stanley party, after four hundred miles…
January 1877 CE
The Stanley party, after four hundred miles (six hundred and forty kilometers), reaches Boyoma Falls (called Stanley Falls for some time after) which they have to pass overland, on January 6, 1877.
Stanley uses sectional boats to pass the great cataracts separating the Congo into distinct tracts.
There are seven cataracts some miles long each.
Altogether, they span 60 miles (97 km).