Above St Louis, pierces the dunes at flood time and reaches the sea, 50 m.
The clays of the Rolling Downs formation overlie a series of sands and drifts, saturated with water under high pressure, which discharges at the surface as a flowing well, when a borehole pierces the impermeable cover.
The larva pierces the vessels of the plant with sharp processes at the hinder end of its body.
It then pierces through the mountains of northern Herzegovina, traverses the Narenta valley, and runs almost parallel with the coast to Trebinje, Ragusa and the Bocche di Cattaro.
The main line starts from Durban, and passing through Pietermaritzburg (71 m.), Ladysmith (190 m.) and Newcastle (268 m.) pierces the Drakensberg at Laing's Nek by a tunnel 2213 ft.