[utahagen]

My friend is a sweetheart, but kind of dopey, so she may say she does think they could tunnel under it! However, I'd respond that tunneling takes longer than strolling over borders that don't even have walls!

(By the way, great photo! Thx.)

[chris37]

My pleasure!

In this photo, which is an engineer designed plan submitted to the WH for The Wall, I think we can safely assume that such a massive structure has a massive foundation and a substantial structure that extends well beneath the surface of the ground.

Personally, I would also fit it with very sensitive sound monitoring equipment aimed at the ground.