Minecraft wiki entry for Infdev_20100327_to_Beta_1.7.3, associated text: A desert biome in the Far Lands.
The Nether Far Lands at X/Z of 500,000,000 with severely stretched lava.
Trees generating past 32,000,000 at X = 268,435,456 along with normal terrain stretching only a few chunks.
The Edge Far Lands meeting with the Corner Far Lands in the Nether at X value of 2,000,000,000 and Z of 12,550,820.
Far Lands generating close to the origin of the world in a version much more recent than Beta 1.8.[7]
The edge, corner and sky far lands intersecting in a version much more recent than Beta 1.8.
The traditional 2-edge corner far lands meeting the 3-corner Far lands, which is completely solid, in a version from far later than Beta 1.8. The cavities are from falling gravel.