From: oen on
On Jun 21, 11:31 pm, dlzc <dl...(a)cox.net> wrote:
> On Jun 21, 10:27 am, oen <ynes9...(a)techemail.com> wrote:
> ...
>
> > you give me a triangular underground cavity,
> > i cant expect a circular sink hole, no matter what
>
> http://pubs.usgs.gov/ha/ha730/ch_d/gif/D108.GIF
> ... trilobar.
>
> http://albertawilderness.ca/issues/wildlands/mcclelland-lake/img/2006...
> ... three in a row.
>
> You are a black hole.
>
> David A. Smith

as said, invalid

those holes are old, still circular, and can
be anything else

give me a new triangular sink hole and
i will reconsider

until then, i am the boss

good bye