Igloo/Structure

Igloo
Igloos are structures that are naturally generated in snowy biomes. They are round structures constructed primarily of snow blocks.

Igloos naturally generate in the Ice Plains and Cold Taiga biomes, but not in Ice Mountains, Ice Plains Spikes, Cold Taiga Hills, or other variants.

Igloos are composed of snow blocks, sheltering a carpeted interior containing a bed, furnace and crafting table.

In half of the igloos, a trapdoor can be found under the carpet, leading down a long ladder shaft to a basement. This passageway and the basement are built from stone bricks, some of which are monster eggs. In this basement is a brewing stand, a cauldron, a chest, and beyond the far wall, behind iron bars in two different cages, are a villager priest and a zombie villager priest. The zombie villager can be cured with a golden apple and a splash potion of weakness, both found inside the igloo. No other types of villagers can be found.

The cauldron is $2/3$ full of water, and the brewing stand contains a splash potion of weakness.

Blueprint
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 * The villager and zombie villager are both clerics.
 * Igloos without basements do not generate layer -23 to -1, and generate a snow block instead of the trapdoor in the ground layer (0).