
Advance
Ostrog
The Ostrog is a small, wooden fortification which is constructed in remote territories of Russia. Due to their reliance on lumber, Ostrogs are relatively inexpensive and swift to construct.
Siberian FrontierAdvancerequiresPotential
CultureBelongs to the East Slavic Culture Group
Exact conditions
Advance tree
Requires 2
Culture Groups
- East SlavicPotential
Advances
Siberian FrontierDiscoveryRequires
Belongs to 1
DiscoveryAge

