**Extra special thanks to SS-BJC for freeing up this area for
our first Puzzle Cache.**
One of my other favourite pastimes (besides Caching) is Caving
and the area around the Canberra region has some extensive cave
systems that I have spent many hours exploring. Canberra itself is
built on the Limestone Plains, so called because of the extensive
limestone throughout the area although not much of it is evident
today. Geologically a limestone environment is referred to as a
Karst.
The Canberra Karsts are very cavernous although only one is
known to have a surface entrance, the Limestone Plains (or Lennox
House) Cave which is noted to contain a lake, although this is
something of an understatement, as it now lies submerged under Lake
Burley Griffin. When you have the cache in hand you will be
standing right on top of this cave.
Foundation excavations and geological investigations for major
buildings and structures from the 1950s to the 1970s confirmed the
presence of cavernous limestone’s beneath central Canberra. The
proposed weir at Acton - one of the possible sites for a dam to
impound Canberra’s proposed lake - was abandoned due to fears of
excessive water leakage through the cavernous limestone's
encountered there. When construction began on the Treasury Building
in the 1960s, extensive caves were uncovered below the site. These
extend from eight to thirty-six metres below the surface through a
richly fossiliferous limestone layer that is over fifty metres deep
in places.
A friend of mine who worked on the construction of the Kings
Avenue Bridge tells me that when drilling for the piers they would
often encounter caverns of 60’ in height.
All caves have a unique identification number constructed
according to their geographical location in the format number,
letter/s, and number. In order to find this cache you will need to
discover the references of some of my favourite caves in southern
NSW.
Some of my favourite caves, by location are:
Wee Jasper
• Scouts Hole - 2WJ ? = A
• Signature - 2WJ ? = B
• Series 4 Extension - 2WJ ? = C
Bungonia
• Drum - 2B ? = D
• Fossil - 2B ? = E
• Grill - 2B ? = F
Cache is located at S 35 17.A+C+F+327 E 149 07.B+D+E+112
Checksum S = 25 E = 31
Cache is a 500ml container so suitable for smallish swaps.
**FTF Honors to winglen & wink.inc**
HINT: CAUTION – Only decrypt if absolutely necessary as the hint
is fairly descriptive.
