The cave monastery of Uplistsikhe is placed 12 km in the southeast of Gori and was built in the 15th century b.c. Slaves carved the monastery in the rock. Up to now you can see the remain of the water system, a wine cellar, a pharmacy, the ruins of a theatre and the main street of the city. It´s similar to Vardzia, but smaller.
We were really impressed by this cave monastery. You can walk through the caves and feel line an "caveman" 
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The cache is hidden at the top of the cave monastery. It is a small box which is hidden in the wall at eye level. Please watch the spoiler pictures so that you need not destroy the wall when searching for the cache.
Enjoy it and happy caching,
coly007