Originally Posted by WHBM
Interestingly no one ever has a concern about the sections of the London Underground that pass under the Thames, usually so close to the riverbed that repair works can be done from a barge in the river working downwards, and maintenance crews walking through at night can hear ships propellers overhead. .
Perception I guess.. There's a huge difference (to me) in being under a river which may or may not be 20-50 feet or so (Im just guessing) for a max 1 min (the river is not that wide) vs. a HUGE expanse of foreboding, dark, choppy water (where all sorts of scary creatures may exist) which could be a mile or more deep. (again, Im guessing, but it's perception).
