Hello everyone -
Yesterday we started a survey project in an abandoned mine. This is a
room-and-pillar limestone mine all on one level. The mine is claimed to
cover 35 acres (about 14 hectares). We ran centerline around part of
the periphery for a bit over 3000 feet and came nowhere near to
finishing. There was no sketch because we were really looking to place
some of the entrances.
The mine is a known hibernaculum for tri-color bats which will soon be
on the endangered species list. It is also an attractive nuisance.
There have been several "lost person/out of light" rescues in there, and
many drunken parties.
The mine is owned by a municipality. Financial resources are in place
to gate all entrances, probably during summer 2025 after the bats leave.
Looking forward, we ARE going to do a full cartographic map of this
mine. That leads to my question for this group.
When we start doing sketch, there will be many sections that have no
outside wall at all. There will be inside wall to define the pillars.
Therion has a very strong dependency on walls.
How can sketch like this be used in Therion?
I would be very glad to have hints and tips from anyone who has done a
survey like this.
Thanks!
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Bill Gee
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