An obstacle that prevents passage or access.
ObstacleDefenseProtectionSecurity
Current best complexity is 6:
Barrier can be discovered in Concepts, categorized under Obstacle, Defense, Protection, Security. An obstacle that prevents passage or access.
It has been discovered by 125 boards and crafted 368 times, first appearing 5 months ago. Barrier can be created from 50 recipes, and goes on to appear as an ingredient in 358 others.
Barrier was first discovered by Tomas's board 5 months ago. They also hold the lowest-complexity recipe, at 6.
Related concepts worth exploring include Ozone Layer, Firewall, Navy, Fortress, Great Wall, Fence, and 6 more.