The whole appearance of this interesting locality showed that the stream of lava was of much more recent date than the rock of the table land, and that the latter was probably formed under water, whilst the cellular scorified lava was poured out into the open air.

The stream of lava enlarged so much, and descended into so broad a valley, that I considered it to be the head of the Burdekin.

I walked across it, in order to ascertain the presence of water, but found nothing but deep dry hollows surrounded with drooping tea trees, and the black basaltic rocks covered with wild bottle-tree scrub.

It joined the valley of lagoons very much like the valley of the reedy brook, and seemed to unite with the latter, and to expand all over the large basin.

Numerous headlands protruded from the table land into the valley of lagoons, between the stream of lava and reedy brook.