[mmartin798]

Originally Posted by dragoon500ly

Let me propose this for a storage tunnel;

25-meter diameter "pipe" in the middle for two-way traffic flow, offset at 45-degree angles (facing towards the entrance, for ease of loading/unloading) are square bays, each measuring 50-meters deep, 20-meters high, and 30-meters wide (this should allow a maximum of 2 shipping containers deep, 2 high and 3 wide, with inspection passages around each set), each bay separated by, say a 15-meter thick plug of rock (for support).

If I have the sizes right, you are looking at 12 standard shipping containers or 96 pallets (these could be stacked up 4 high) on warehouse racks.

You are off someplace. I have included a scale drawing.