At Victoria, on our way up, we leave the train for a coach drive, to Jenolan. Here the scenery changes; the rock is no longer sandstone, but limestone, and the streams have burrowed out many curious gorges and underground channels as in our own Derbyshire. Here we have one of these in the form of a huge rock archway 19 through which we catch a glimpse of the country beyond; while far down below us flows the stream which bored out the arch. A little further on we find the stream running at the bottom of a 20 lofty cavern, and out into a deep and narrow gorge. Here again is a view of the interior of one of these caverns, with its huge pillars hanging from the roof and rising up from the floor. These limestone tunnels and gorges, and the sandstone valleys 21 with their steep surrounding cliffs and narrow outlets, are a fine subject for the artist and tourist in search of beauty, but do not suggest opportunities for settlement or farming; at the same time they are evidently a serious obstacle to movement. The bare surface of the plateau is little better; in fact, the highlands in this district are still among the most thinly populated areas in New South Wales, in spite of their nearness to the capital and the oldest settlements. So we pass through quickly, and coming out by a long tunnel drop down to Lithgow, 22 where we enter an entirely different kind of country. Lithgow is a manufacturing town, with coal mines, ironworks, smoke and dirt. It really belongs to the coast region, and is here, on the inside of the ridge, only because a small piece of the Newcastle coalfield, which underlies all the country which we have been crossing, crops out in this district from under the sandstone. On our journey inland we shall not meet with any other town of the same type, as we are now entering the great wheat-belt of Eastern Australia.