Dyrholaey (west of Vik) is the southernmost point of mailand Iceland. It was formed during an interglacial period in a submarine eruption. This is what the guide book says though I've no idea what a submarine eruption is!
Haidrangur (56 m a.s.l.) is the highest rock stacks.
Ingólshöfði, bird paradise More to the eastside stay on mainroad Nr.1.. After about 160kms you will see a board on the right side, with the name Ingólshöfði. There are fully organised guided tours to the coast, where you can see hundreds of puffins (even touch them!) squababies squas etc etc. As an extra, the icelandic guide will tell you stories how Iceland were discovered by the old vikings.
Another view of Dyrholaey. It was beginning to drizzle while we were there. On a nice sunny day, this place must be stunning!