1.   And the rivers of water were thick as sludge, slick enough with oil to catch fire.

2.   At present the river is quite exciting because the spring rains are keeping it high.

3.   At this time of year, before the Monsoon, the river is at its lowest.

4.   Some of these riverbank cave entrances are submerged when the river is in spate making their underground passages subject to sudden flooding.

5.   Soon they were between vertical walls and the river was roaring mud.

6.   The river at this point is half a mile wide.

7.   The river is at its highest in spring.

8.   The river is benign now but will turn into a threatening torrent when the monsoons begin in early summer.

9.   The river is eight miles away dead ahead.

10.   The river is full to the brim and quite placid so we set off again.