Earth Tunnel Simulator
Click anywhere on the globe to dig a tunnel straight through Earth. Discover what is on the other side, how long it takes to fall through, and which layers you pass through along the way.
Interactive Globe
Click anywhere to place your tunnel
Click the Globe to Start
Rotate the globe with drag, then click any point to dig a tunnel and see what is on the other side of Earth.
The Science Behind the Simulator
Fall Time
Assuming uniform Earth density and ignoring air resistance, the fall time through any tunnel is the same: about 42 minutes. This is because gravity decreases linearly toward the center, creating simple harmonic motion.
Antipodes
The point directly opposite you on Earth is your antipode. Most land locations have antipodes in ocean water. New Zealand and parts of Spain are rare exceptions where land faces land.
Earth Layers
Earth has four main layers: the thin crust (0-35 km), the rocky mantle (35-2890 km), the liquid outer core (2890-5150 km), and the solid inner core (5150-6371 km).