For more than half a century USSR army was present in Latvia. It moved out only a little over decade ago, leaving the ruins of its buildings behind all over the country. This forest, not far from Riga, is full with ruins of abandoned military buildings. The cache was placed on March 25, the memorial day of victims of communist regime, sent to Siberia in 1949. The army base is accessible by car, and you can drive as close as some 300m to the cache. The cache is a glass jar containing a logbook, pencil, pen and an ice-fishing tool attached outside of the jar.
Update 03.04.2021 As this is old cache, I let description as it was. Now there is lock&lock box not jar, and you can drive closer than previos times.