An answer

Courtesy: Google search

Finally an answer to my long pondered question.. read "Yet another Onam" to know more..

I did a few research here and there (no I am very lazy to go to a library and explore so, I was Glued to google.. and researched.. there were many theories but this answer some what pacified me..

Here is the answer I took from a Website called “Haindava Keralam..”

The Story of Bhagiratha performing penance to bring River Ganga to the world is well known, a statue of the penance can be found in Mahabalipurm too.. This penance was to facilitate Moksha to his ancestors and also to protect the world from famine.  When Ganga flew in the world the force was very abundant (the reason why Lord shiva had to pitch in and help by carrying in his Jata Mudi). The overflowing Ganges immersed most of the land and so the sages, who were doing penance in the southern part of India including the part of Kerala prayed to Lord Parshuram to get the land back, hence he threw his axe from one part of Kerala (Gokarna), so from there to the place where the axe fell (hopefully Kanyakumari) the water gave way and the land emerged again, which is now called Keralam..

Also we need to keep in mind that India was not in the shape we witness now.. it was bigger and wider and different compared to the map we have now!!

This is the story of Parasuram finding or per say re-finding Kerala, the one that applied to my mind.. A feeling of happiness to have found atleast one logically satisfying answer.. :)

So, why am I pondering over this a lot..! I believe or the little God loving child in me believes that all these are true, even if they are myth.. they should be written by excellent story tellers with so much of twists and turns and cross-links, and so, it wouldn't lose logic.. !