A tunnel to . . . or for what?

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Speculation abounds where the above tunnel leads to.

The mystery portal is well below Cedar Street here in downtown St. Paul outside the front door of Minnesota Public Radio.

The tunnel’s existence has come to light as part of the Central Corridor Light Rail construction project.

A semi-official explanation from one of the construction workers is that it’s a “utility” tunnel and that it’s tall enough to stand in without stooping.

“Utility” tunnel sounds like a cover story to obscure the real purpose. But for what?

An escape route for city council members or state lawmakers set upon by angry taxpayers? But city hall and the state capitol are blocks away and the tunnel goes the wrong direction.

What are your ideas?