The Ancient Altar is one of Windrose's more deceptive Points of Interest. The puzzle itself is straightforward once you know what it wants, but the in-game prompt actively misleads you by asking for "ancient spices" when the actual item you need is called Mysterious Spices. That mismatch trips up a lot of players who go hunting for something that doesn't exist. Here's exactly what you need to do, where to find the items, and what you'll get for your trouble.
Where are the Ancient Altars located?
Ancient Altars sit inside the Tainted Forest areas of the Cursed Swamps biome. You'll recognize Tainted Forest zones by the trees covered in orange bulbous growths. According to the guide documented on deltiasgaming.com, these altars feature a large humanoid statue wearing a mask and robes, with a bowl at the base where offerings are placed.
One important detail: the moment you step into a Tainted Forest, the Wood Plague gauge starts filling. If it maxes out, you die instantly. Equipping a Sun Ring slows the buildup rate significantly. If you don't have one crafted yet, you can also step out of the Tainted Forest periodically to let the gauge reset before heading back in.
A single Cursed Swamps island can contain multiple Ancient Altars, so it's worth clearing the Mysterious Spices requirement before exploring to maximize efficiency.
Ancient Altar offering location
What offering does the Ancient Altar need?
To complete the puzzle, you need exactly 5 Mysterious Spices in your inventory. The altar's prompt says "ancient spices," but that item name doesn't exist in the game. Mysterious Spices are what it actually accepts. This is confirmed by community testing documented on deltiasgaming.com.
Don't waste time searching for "ancient spices" as a separate item. The altar prompt is misleading. Mysterious Spices are the correct offering.
How to get Mysterious Spices
Mysterious Spices drop from three enemy types found specifically within the Tainted Forest area of the Cursed Swamps biome:
- Plague Thrall
- Plague Warrior
- Plague Witch
All three spawn in the same Tainted Forest zones where the altars are located, so you can farm the spices and locate the altars in the same run. Kill enough of these enemies until you have 5 Mysterious Spices, then interact with the altar and select the offering option.
Farm your 5 Mysterious Spices before engaging with the altar. You can't partially complete the offering, so having all 5 ready saves you a return trip through the Wood Plague zone.
What rewards does the Ancient Altar give?
Complete the offering and the altar pays out two items plus experience:
The Gold Mask of the Priest has no use beyond selling. Take them to the Smugglers of Port Royal Buyer and each mask sells for 5 Guineas, putting 10 Guineas total in your pocket per altar completed. For a puzzle that takes a few minutes once you know the solution, that's a solid return.
If you find multiple Ancient Altars on one island, you'll need 5 Mysterious Spices per altar. Stock up on spices before moving between altars to avoid repeated trips into the Wood Plague zone.
How to approach the puzzle efficiently
Based on the mechanics described in the deltiasgaming.com guide, here's the cleanest sequence for clearing Ancient Altars in the Cursed Swamps:
- Craft or equip a Sun Ring before entering the Tainted Forest to slow Wood Plague buildup
- Enter the Tainted Forest and kill Plague Thralls, Plague Warriors, and Plague Witches until you have 5 Mysterious Spices
- Locate the Ancient Altar (look for the masked humanoid statue)
- Interact with the altar and select the offering option
- Collect your 2x Gold Mask of the Priest and 50 XP
- Sell the masks to the Smugglers of Port Royal Buyer for 10 Guineas
The Cursed Swamps can have multiple Ancient Altars per island. Check your map carefully before leaving to make sure you haven't missed one nearby.
For more Windrose puzzle walkthroughs and survival guides, browse the latest gaming guides to keep your progression moving.