Any other language nerds out there?

My husband sent me a Wall Street Journal article about Spain's Basque Country, and I was intrigued by its mysterious native language, Euskera, which is believed to be the oldest in Europe. I did some Googling and found this fascinating info.

The Basque language...is not an Indoeuropean language, and shows no resemblance to languages in neighbouring countries...Owing to some similarities with the Georgian language, some linguists think it could be related to languages from the Caucasus. Others relate the language to non-Arabic languages from the north of Africa. One of the most likely hypotheses argues that the Basque language developed "in situ", in the land of the primitive Basques. That theory is supported by the discovery of some Basque-type skulls in Neolithic sites, which ruled out the thesis of immigration from other areas. Many think it is a very old language because there are words, such as that for axe ("aizkora" or "haizkora") for example, that have the same root as the word rock ("aitz"> or "haitz").

I thought that last sentence was particularly fascinating. (I should have majored in linguistics.)