You could literally spend many weeks exploring all the beautiful spots in South Iceland. The landscape of this area is extremely rich and diverse, both soft and rugged, black and white or so rich of colors you cannot choose where to point your camera.
Vestmannaeyjar - The Westman Islands
If you have a day or two to spare, you should go and visit the beautiful Westman Islands off the south coast and the famous puffins. There are about 15 islands and 20 cliffs.
A flight from Reykjavík to the islands only takes about 20 minutes and you could also take a ferry from the town Þorlákshöfn which takes about 3 hours.
You may have heard about Surtsey, the newest island, which rose from the sea in an eruption during 1963-1967. 
Heimaey, the only inhabited island, also had an eruption some years later, in 1973, and all the inhabitants (ca. 5000) had to be evacuated immediately!
The 23rd of January 1973 was a day the inhabitants of the Westman Islands will never forget. It was the day when the Eldfell Volcano erupted along a 1.5 mile fissure along the lenght of the island of Heimaey. The island’s five thousand residents were rescued at the harbor of the town, where the island’s fishing fleet transported the people to safety.
The harbour of Vestmannaeyjar was the most important fishing port in Iceland and for a time the lava flow from the volcano threatened to completely close off the harbour. However, tremendous efforts of a few volonteers prevented the lava flow from closing the harbour and thereby saved the island’s livelihood. How did they do that? By coming up with the brilliant idea of pouring salt water onto the burning flow or as some say “peeing on the lava”.
