Here he experienced many hindrances arising from the rough basaltic nature of the country that borders the northern head-waters of that river.

When he finally debouched upon the wide western plains, he crossed the Flinders, without recognising it as the main branch, in the search for which he went on northward.

Approaching the Gulf of Carpentaria, he had several encounters with the aboriginals.

As he neared the coast, the bend of the Flinders brought that river again across his route, and it was then that he came on some camel tracks, which assured him that the missing party, the object of his search, had at any rate reached the Gulf safely.

On his outward way Walker may be said to have pursued a course parallel with that of the Flinders, a little further to the northward.
He pushed on to the Albert River, to replenish his provisions at the depot provided for the use of the various relief parties.