Woman on an island, day 23

I examine the keypad for a short while, it seems in remarkably good condition. I start thinking what the code could be, I type in "Tornado" but nothing happens. I sit down on a nearby rock while chewing on a piece of fruit...what could the code be? Then a thought hits me- the paper! I quickly take it out of my pocket! If the eye of the fountain is the key then the code must be...the numbers! it's not a date...it's the code! I punch in the numbers:  14011962...nothing! damn! As I'm about to walk way in frustration, I hear something...it's coming from the fountain! The water is draining away! Five Minutes later I'm staring at a empty hole, as I get closer I notice a ladder is attached to it! I hesitate...Should I go down there? What is waiting for me in the blackness? And was I meant to find this secret?