The most prominent feature of Mer is the long steep hill of Gelam, which culminates in a peak, 750 feet in height. It extends along the western side of the island, and at its northern end terminates in a low hill named Zomar, which splays out into two spurs, the outer of which is called Upimager and the inner Mĕkernurnur. Gelam rises up from a narrow belt of cultivated soil behind the sand beach at an angle of 30 degrees, forming a regular even slope, covered with grass save for occasional patches of bare rock and low shrubs. At the southern end the ground is much broken. The termination of the smooth portion is marked by a conspicuous curved escarpment; beyond this is a prominent block of rock about half-way up the hill. This is known as the “eye.” The whole hill seen from some distance at sea bears a strong resemblance to an animal, and the natives speak of it as having once been a dugong, the history of which is enshrined in the legend of Gelam, a youth who is fabled to have come from Moa. The terminal hill and the north end of Gelam represents the lobed tail of the dugong, the curved escarpment corresponds to the front edge of its paddle, while the “eye” and the broken ground which indicates the nose and mouth complete the head.

The highest part of Gelam on its landward side forms bold, riven precipices of about fifty feet in height. A small gorge (Werbadupat) at the extreme south end of the island drains the great valley; beyond it rises the small, symmetrical hill Dĕbĕmad, which passes into the short crest of Mergar. The latter corresponds to Gelam on the opposite side of the island; it terminates in the steep hill Pitkir.

Fig. 2. Murray Island from the South, with its Fringing Reef

Gelam and Mergar form a somewhat horseshoe-shaped range, the continuity of which is interrupted at its greatest bend, and it is here the ground is most broken up. The rock is a beautifully stratified volcanic ash, with an outward dip of 30 degrees. Within this crater is a smaller horseshoe-shaped hill, which is the remains of the central cone of the old volcano. The eastern limit of the degraded cone is named Gur; the western, which is known as Zaumo, is prolonged into a spur called Ai. In the valley (Deaudupat) between these hills and Gelam arises a stream which flows in a northerly and north-easterly direction, and after receiving two other affluents empties itself into the sea at Korog. It should be remembered that the beds of all the streams are dry for a greater portion of the year, and it is only during the rainy season—i.e. from November to March, inclusive—and then only immediately after the rain, that the term “stream” can be applicable to them. There are, however, some water-holes in the bed of the stream which hold water for many months.

The great lava stream extends with an undulating surface from the central cone to the northern end of the island. It forms a fertile tableland, which is bounded by a steep slope. On its west side this slope is practically a continuation of the sides (Zaumo and Ai) of the central cone, and bounds the eastern side of the miniature delta valley of the Deaudupat stream. At the northern and eastern sides of the island the lava stream forms an abrupt or steep declivity, extending either right down to the water’s edge or occasionally leaving a narrow shore.

A fringing coral reef extends all round Mer, but has its greatest width along the easterly side of the island, where it forms an extensive shallow shelf which dries, or very nearly so, at spring tides, and constitutes an admirable fishing ground for the natives.

A mile and a quarter to the south of Mer are the islands of Dauar and Waier. The former consists of two hills—Au Dauar, 605 feet in height, and Kebe Dauar, of less than half that height. Au Dauar is a steep, grassy hill like Gelam, but the saddle-shaped depression between the two hills supports a luxuriant vegetation. There is a sand-spit at each end.

Waier is a remarkable little island, as it practically consists solely of a pinnacled and fissured crescentic wall of coarse volcanic ash about 300 feet in height. There is a small sand-spit on the side facing Dauar, and a sand beach along the concavity of the island. At these spots and in many of the gullies there is some vegetation, otherwise the island presents a barren though very picturesque appearance.