Those Were the Days

Those Were the Days is a task advancement in the Nether tab of Minecraft's advancement system, carrying the in-game description "Enter a Bastion Remnant." It branches directly off Nether, so that earlier advancement is its prerequisite and must be earned first. The Nether tab covers advancements for exploring and conquering the Nether dimension, from entering the portal to brewing potions. Those Were the Days was added in Minecraft 1.16, from the Nether Update, and is still in the 26.2 advancement set.

It is rated Medium difficulty on this site: requires some preparation or specific resources. Part of normal gameplay progression. It uses the standard task frame, meaning it is a normal step in the tree rather than a goal or challenge milestone. One further advancement, War Pigs, is gated behind it.

In tree terms, Those Were the Days sits first along its line: the full path from the Nether root reads Nether -> Those Were the Days. That means 1 advancement must be completed before this one becomes available, and Those Were the Days is one of 23 total advancements in the Nether tab. It shares its parent with 7 sibling advancements (Return to Sender, Hidden in the Depths, A Terrible Fortress, Who is Cutting Onions?, Oh Shiny, This Boat Has Legs, and Subspace Bubble), all of which open from the same point in the tree.

Those Were the Days grants no experience directly; its value is progression rather than a point payout.

Earning it unlocks War Pigs, which becomes the next step along this branch of the tree.