The cataracts of the Nile are shallow stretches between LOCATION@1 and LOCATION@2 where the water 's surface is broken by numerous small boulders and stones lying on the river bed , as well as many small rocky islets .

The cataracts of the Nile are shallow stretches between LOCATION@1 and LOCATION@2 where the water 's surface is broken by numerous small boulders and stones that lie on the river bed , as well as many small rocky islets .
