Where is Atlantis supposed to be located?

No where. It hasn't been built... yet.

Atlantis is a future vision, not a past one. This is why it hasn't been found.

Atlantis will be a floating Atlantic "city" Near or about the equator. It will be constructed in such a manner that low current will keep it 'solid' by causing mineralization of a web of metal trapping a 'bubble' of foam.

The whole thing will go terribly wrong due a power failure that just keeps going. Each 'bubble' or pocket will weaken, break releasing its foam, the 'concrete' structure will sink like a rock after about 30% of the foam breaks free.

The technology is here: [link to www.globalcoral.org]