I also found some great info in the Fragments of Noah section of Enoch and in the first book here to suggest that Antarctica IS this land. It could even be what was called Atlantis as it is covered with a one mile deep ocean of ice now.
The Book of Enoch: Book of Noah--a Fragment: Chapter LXVII
8. But those waters shall in those days serve for the kings and the mighty and the exalted, and those who dwell on the earth, for the healing of the body, but for the punishment of the spirit; now their spirit is full of lust, that they may be punished in their body, for they have denied the Lord of Spirits and see their punishment daily, and yet believe not in His name.
9. And in proportion as the burning of their bodies becomes severe, a corresponding change shall take place in their spirit for ever and ever; for before the Lord of Spirits none shall utter an idle word.
10. For the judgement shall come upon them, because they believe in the lust of their body and deny the Spirit of the Lord.
11. And those same waters will undergo a change in those days; for when those angels are punished in these waters, these water-springs shall change their temperature, and when the angels ascend, this water of the springs shall change and become cold.
12. And I heard Michael answering and saying: 'This judgement wherewith the angels are judged is a testimony for the kings and the mighty who possess the earth.'
13. Because these waters of judgement minister to the healing of the body of the kings and the lust of their body; therefore they will not see and will not believe that those waters will change and become a fire which burns for ever.