Assembled globe

The five globe-box pieces in their assembled pose: the northern half (dome up) and the southern half (rotated 180° about x so the dome points down), with their rims meeting at the equator (z = 0), and the twist-lock cylinder spanning the seam entirely inside (z = −12..+12). Twisting the two hemispheres in opposite directions locks both halves while the ring stays put, and the relief seam is aligned when locked. The rotation axis here is the Earth's polar axis (the poles lie on it, pointing up/down on screen). Drag to rotate, scroll to zoom; the faint wireframe sphere is the sea-level globe (R = 50 mm).

Each half also holds a Pellucidar liner, the bowl nested against its inner surface. Pellucidar is Burroughs' inner world, the concave inside of the hollow Earth, and its geography is our own inverted: its continents are where our oceans are and its seas where our continents are. The liners are inside the closed globe, and they face each other across the equator, so their maps are on the faces you see looking up into each bowl: click a legend entry to show or hide that piece, or open assemble.html#inner to hide the shell pieces and look into the northern liner.

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