This area has 1 Secret Rune that can be collected only after completing the main campaign. Check the video at the end of the page if the written walkthrough is not clear.
Secret 1 (Secret Cow Level Rune)
You’ll find it in the area where you get the objective to free 6 Villagers. On the Top-Left side you’ll find a pressure plate among the redstones. Press the plate to open a secret passage. Go inside and collect a Secret Rune. Collecting 9 Runes will unlock a Secret Cow Mission.
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