The barcrawl card records player's progress in the Alfred Grimhand's Barcrawl miniquest. It is given to player by the Barbarian guard when they first try to enter the Barbarian Outpost north of Baxtorian Falls. If players try to read the card after finishing the crawl they will be told: "You are too drunk to be able to read the barcrawl card."
Passing the Barcrawl test gives the player access to the outpost, although in order to access the agility course within they still require 35 agility.
Completing Alfred Grimhand's Barcrawl is a requirement for the Horror from the Deep quest during which players must talk to Gunnjorn inside of the agility course to obtain a spare key to the Lighthouse. It is also a requirement for the Scorpion Catcher quest, as one of the scorpions is inside the outpost (however the agility level is not required since the scorpion is located an the entrance section).