The Helme caves, in the manor park of the same name, are unrivalled in Estonia. Situated to the north of the castle ruins, the caves have white Burtniek layer sandstone walls standing 3 m high. Unfortunately, some of the better known caves have already collapsed. The cave system once comprised seven interlinked chambers, the biggest of which was known as the Church of Moses. The caves are peppered with springs, and over the years have been further dug out and used as shelters.Did you know...?*In the olden days the Helme caves were also known locally as the gateway to Hell