# Can a circumnavigation prove someone is living in Hollow Earth? [duplicate]

Imagine that the Hollow Earth theory is actually right. We've been living inside a planet shell. The gravity: we are "glued" to the ground, unlike this explanation that conclude we are should be in zero gravity.

I imagine that a person can sail/trek around the earth, and conclude that earth is spherical. Yes, but you're living in it, not on it.

So, by circumnavigation, can one deduce that they are living within earth, as opposed to on earth? I'm interested in "simple ways", and scientific ways.

Note: They've been living there for ages.

1. Perpetual day, means no night. The light source is a "sun" in the center of the shell. The light is just similarly blinding like the sun.
2. Atmosphere pressure is reduced when you go to the center.
3. Opposite side is not visible.
4. How the gravity works? Just like you got pulled to the ground perpendicularly.
• you want scientific explanation for handwaved situation? – L.Dutch Nov 17 '17 at 5:02
• @L.Dutch It looks like the question is "How can people determine that they're living inside a hollow earth?" I swear I've heard this question before. – sphennings Nov 17 '17 at 5:50
• They have! I distinctly remember answering a couple – nzaman Nov 17 '17 at 6:31
• I don't get this. You state in your commets that we still have a day/night cycle. If we had day all day, this would prove it, yeah. Do I understand it correctly that everything seems to appear exactly as we lived on this earth? Then nothing will prove it ... – Raditz_35 Nov 17 '17 at 7:23
• @Raditz_35 and because they originally lived in perpetual day, I don't think day/night cycle will provide a clue to figure out they lived inside a shell. – Vylix Nov 17 '17 at 8:47