[ExSoldier]

BTW, I seriously doubt the existence of such tunnels here in Miami, Florida. The water table is too high. Plus most of the bedrock in the area is limestone, which often leads to huge sinkholes swallowing homes or opening chasms in highways, at times. Not condusive to long term viability of such feats of engineering.

[Calpernia]

Yes, you are right. The water table is a factor for FL. However, in NJ, we have historic tunnels. I use to play and explore by one that went UNDER the Passaic River.

'Officially' they are no longer here due to insurance issues.

You can only read about them on 'legend' sites now like here:

http://www.weirdnj.com/_underground/tunnelsofdeath.html

And I will emphasive, I know a mosque or two that went up in the areas these are located in. We know the history of tunnel use from the events in the Mid East.

But, this is only me speculating.