The loftiest mountains in South Wales, extending from Herefordshire and Monmouthshire (where their eastern spurs form the Hatteral Hills) in a southeasterly direction into Carmarthenshire, completely encircle the county on the east and south except for the break formed by the Vale of Usk at Crickhowell.
At Lamb Head, its southeasterly point, is a broch and Pictish pier, and about 2 m.
The main watershed follows a tortuous course which crosses the mountainous belt just north of New river in Virginia; south of this the rivers head in the Blue Ridge, cross the higher Unakas, receive important tributaries from the Great Valley, and traversing the Cumberland Plateau in spreading gorges, escape by way of the Cumberland and Tennessee rivers to the Ohio and Mississippi, and thus to the Gulf of Mexico; in the central section the rivers, rising in or beyond the Valley Ridges, flow through great gorges (water gaps) to the Great Valley, and by southeasterly courses across the Blue Ridge to tidal estuaries penetrating the coastal plain; in the northern section the water-parting lies on the inland side of the mountainous belt, the main lines of drainage running from north to south.
This part of the coast, subject alike to strong westerly and southeasterly winds, is often tempestuous, as is witnessed by the name, corruption of a Hottentot word meaning dry, arid.
Its course is generally easterly as long as it is confined by these uplands, but on debauching upon the central plain of Yorkshire it takes a southeasterly turn and flows past Ripon and Boroughbridge to form, by its union with the Swale, the river Ouse, which drains to the Humber.
In a long and obstinate encounter, it was defeated at Dorylaeum (July 1); and the crusaders marched unmolested in a southeasterly direction to Heraclea.
The southerly summer winds of the Asiatic seas between the equator and the tropic do not extend to the coasts of Java, and the southeasterly trade winds are there developed in the usual manner.
D'Abreu, sailing in a southeasterly direction from the Straits of Malacca, skirted the southern coast of Borneo and laid up his ships at Amboyna, a small island near the south-western extremity of Ceram.