Top.
1.Flinty gravel, the flints containing nummulites.
2.Tufaceous white limestone.
3.Hard pink siliceous limestone.
4.Fissile sandy marls and gritty limestones.

On the western part of the hills the gravel covering is absent, the succession here seen being:—

Top.
1.Sandy marls, 60 centimetres.
2.Very hard pink calcareous grit, 1 metre.
3.White sandy marl, fissile, 2 metres.
4.Soft red and white marls, 10 metres.

No fossils were seen in these beds except the nummulites in the gravel, which prove the latter to be at least in part derived from Eocene deposits.

The hills left of the road a little further on show the following section:—

Top.
1.Flinty gravel; thin deposit unconformably overlying the limestone below.
2.Tufaceous white limestone (thin bed).
3.Hard grey crystalline limestone, 1·2 m.
4.Slope of sand and debris, doubtless covering soft marly beds.

On entering the depression at 98 kilometres a band of earthy reddish limestone with Bryozoa is crossed, this bed appearing to overlie the fissile sandy limestone already mentioned. From here a good view of the numerous limestone hills is obtained, the top beds of hard limestone showing out sharply from the lower sand-covered slopes; the beds show a stratigraphical depression here in addition to the eroded surface depression. The floor of the depression is covered with sandy gravel and Ostrea shells; an examination of the left scarp, about 3 kilometres after entering the hollow, showed the following succession of beds (total height of section 20 metres):—

Top.
1.Hard white limestone with numerous shell-casts and containing some shaly layers, 3 m.
2.Debris-covered slope of softer beds with Ostrea shells, 16 m.
3.Red earthy limestone with shells at base of hill.

One of the hills within the depression, to the left of the track about 6 kilometres further on, showed in a face of about 28 metres the following beds:—

Top.
1.Hard white limestone, sand-eroded.
2.Brown fossiliferous limestone.
3.White limestone with many small fossils.