There is an underground passage that leads from the Nurmuiža Castle to the nearby church.
It should be a verst* in length and it passes below the pond.
The passage has been bricked over at the castle-side.
The underground passage can be accessed through a succession of three doors in the church – and those doors have been built quite close to one another and they must be walked through one after another.
Nobody can, however, fare further than the third door – for the cavern has such a strong draught that it puts out the flame in any lantern.
This was what happened ten years ago.
A hunting hound was sent forth into the passage and it was being called out at the other end by the sound of a trumpet.
But the hound never emerged out of the cave again.
The underground passage is said to have been built during the rule of the Swedes* – for keeping their treasury.
It has been told that the cavern used to be quite filled with sundry Swedish chattels and their battle weaponry.
The church, as well, had two Swedish flags in its keeping.
***Verst – a historical unit of measurement approximate to 1.07 km or 0.7 miles.
*The rule of the Swedes is a historical reference to the period between 1629 – 1721 when Vidzeme (the Northern region of nowadays Latvia) was a part of the Swedish Empire.
Latvian Folk Tales 