Mysterious pyramids found in Antarctica

Google Earth images of Antarctica have revealed what look like pyramids - prompting conspiracy theorists to suggest they were created by anything from lost civilizations to aliens.
The 'snow pyramids' have the internet abuzz with the idea there was an ancient human civilization that once lived in Antarctica.
Three pyramids have been found, with two of them 10 miles inland and the third near the coastline. They have four sides, prompting comparisons to the Egyptian pyramids of Giza.
Some scientists suggest humans could once have lived in the frozen area as it may once have been a lot warmer, perhaps even up to 20C.
Speaking to The Sun, Dr Vanessa Bowman, of the British Antarctic Survey, once said: "Go back 100 million years ago and Antarctica was covered in lush rainforests similar to those that exist in New Zealand today."
Others suggestion are that the pyramids are the remnants of the lost civilization of Atlantis, or that they were built with the help of aliens.
The Daily Star suggests that if the structures are found to be man-made, it could change our understanding of human history.

However, the Inquisitr reports that a geological explanation of the pyramids has also been put forward, "suggesting pyramid-like formations could be extended rocky peaks known as "nunatak," which are protrusions through ice or glacial crust of the peaks of mountains or rocks that stand higher than the terrain around it."
Whatever they turn out to be,  they certainly are weird and unusual and give rise to dozens of theories. Personally, I 'm leaning toward the alien theory, which makes as much sense as the others.