The place where Flinders is believed to have first landed on Kangaroo Island is now marked by a tall cairn, which was spontaneously built by the inhabitants, the school children assisting, in 1906. An inscription on a faced stone commemorates the event. The white pyramid can be seen from vessels using Backstairs Passage.* (* See the account of the making of the cairn, by C.E. Owen Smythe, I.S.O., who initiated and superintended the work, South Australian Geographical Society's Proceedings 1906 page 58.) A very short stay was made at Kangaroo Island on this first call. On March 24th Investigator Strait was crossed, and the examination of the mainland was resumed. The ship was steered north-west, and, the coast being reached, no land was visible to the eastward. The conclusion was drawn that another gulf ran inland, and the surmise proved to be correct. The new discovery, named St. Vincent's Gulf, was penetrated on the 27th, and was first explored on the eastern shore, not on the western as had been the case with Spencer's Gulf. Mount Lofty was sighted at dawn on Sunday, March 28th. The nearest part of the coast was three leagues distant at the time, "mostly low, and composed of sand and rock, with a few small trees scattered over it; but at a few miles inland, where the back mountains rise, the country was well clothed with forest timber, and had a fertile appearance. The fires bespoke this to be a part of the continent." The coast to the northward was seen to be very low, and the soundings were fast decreasing. From noon to six o'clock the Investigator ran north thirty miles, skirting a sandy shore, and at length dropped anchor in five fathoms. On the following morning land was seen to the westward, as well as eastward, and there was "a hummocky mountain, capped with clouds, apparently near the head of the inlet." Wind failing, very little progress was made till noon, and at sunset the shores appeared to be closing round. The absence of tide gave no prospect of finding a river at the head of the gulf. Early on the morning of the 30th Flinders went out in a boat, accompanied by Robert Brown, and rowed up to the mud-flats at the head of the gulf. Picking out a narrow channel, it was found possible to get within half a mile of dry land. Then, leaving the boat, Flinders and Brown walked along a bank of mud and sand to the shore, to examine the country. Flinders ascended one of the foot-hills of the range that forms the backbone of Yorke's Peninsula, stretching north and south upwards of two hundred miles.