Tunnel diggers of the world, unite!

The article caught my attention mainly because of the picture:

It looked so familiar that it took me a second to find its twin:


Of course, there are some differences in design and decor, but otherwise these two could have been brothers. On the other hand, what the heck is the difference between the tunnels?

The first one comes from Mexico-US border, and the second was dug under Gaza-Egypt border. There is a twist, though:

Police investigating suspicious activity at a home just south of the U.S.-Mexican border found a group of men digging a secret tunnel to the United States — complete with lights, an elevator and air-conditioning.

It looks like the Mexican diggers are more advanced than their Gazan colleagues.

Which fact, of course, points to a need for an international conference of tunnel diggers. Or, maybe, we should call them underground penetration experts, to be politically correct?

Anyway, what would be the best place to host such a gathering?

Mmm...