The Simunjon enters the Sadong River about twenty miles up.

It is very narrow and very winding, and much overshadowed by the lofty forest, which sometimes almost meets over it.

The whole country between it and the sea is a perfectly level forest-covered swamp, out of which rise a few isolated hills, at the foot of one of which the works are situated.

From the landing-place to the hill a Dyak road had been formed, which consisted solely of tree-trunks laid end to end.

Along these the barefooted natives walk and carry heavy burdens with the greatest ease, but to a booted European it is very slippery work, and when one's attention is constantly attracted by the various objects of interest around, a few tumbles into the bog are almost inevitable.