1: Sperm whales can get beached in large numbers.
2: Sperm whales can apparently get beached on icebergs.
Dead, Decaying Whale Poses Puzzle: How Did It Land On Top Of An
Iceberg? May 16, 1985|United Press International NUUK, GREENLAND — A
dead whale frozen in an iceberg 13 feet above the surface of the
frigid waters off south Greenland is mystifying scientists and curious
residents of a tiny Greenland settlement.
No one can figure out how the 59-foot sperm whale died or how it ended
up in an icy grave high above the water drifting a few miles off the
tiny settlement of Alluitsup...
Close inspection reveals the whale may have been the victim of a
hunter`s harpoon. In its neck is a cylindrical hole 15 inches in
diameter and three feet.
But that does not explain how the beast came to rest in an icy grave
bobbing 13 feet above the water...
They believe the whale, weakened or dead, could have drifted over the
submerged portion of an iceberg and become an involuntary hitchhiker
when the iceberg separated and a submerged portion rose under the
3: Big icebergs can get beached too.
1: Sperm whale herd beaches itself on floating iceberg.
2: Iceberg pivots in the water as it melts, lifting beached whales to new topmost portion (as with above pasted story).
3: Iceberg itself is beached on land and there it sits. Maybe it gets wedged in a fork in an existing glacier.
4: Whales atop iceberg rot and are eaten by seabirds / foxes etc.
5: Snow and ice accumulate atop iceberg which is incorporated into glacier.
6: Later, whale skeletons are found entombed in the ice.
7: People move in and make cozy cottages.
This scenario would mean the dwelling are right on the coast, where the iceberg came to rest. Another possibility is that the whales were moved one at a time to the high spot where your tundra dwellers found them.
A thunderbird would do that.