I had something similar happen to my Langley box.

Seems someone found it, emptied the contents, filled it with weeds
and tossed it in the Sound... it turned up on the beach at a
military base in Oak Harbor. I got a nice email from a gentleman
there who found the remains (It had the "do not destroy", email etc
on the lid).

--- In letterbox-usa@y..., "dvn2rckr" wrote:
> The original location was under a bridge relatively close (approx
> 250m) to a major neighborhood. The truant kids seem to hang out
in
> the area under the bridge and smoke/drink, etc. (as evidenced by
> some of the trash under there). It is a very historic area but
they
> don't seem to care. I found a more secure location a few 100m
away
> that I don't think they'll be too interested in. The other 2
boxes
> in the series are absolutely fine, but then again, they aren't in
an
> area where those kids are likely to hang out. Also, the box was
> well marked all over the outside 'do not destroy' and 'do not
> remove'. It was labeled as a letterbox and there were copious
> copies of info sheets explaining the hobby of letterboxing on the
> inside. But who knows? Maybe a bear took it...