piece of rock that has been moved by a glacier, its size ranges from pebbles to large boulders
Glacial erratics from Norway on Schokland in the Netherlands Glacial erratic boulder in Snowdonia (Eryri), Wales
A glacial erratic is a glacially deposited rock differing from the type of rock native to the area in which it rests. Erratics, which take their name from the Latin word errare ("to wander"), are carried by glacial ice, often over distances of hundreds of kilometres. Erratics can range in size from pebbles to large boulders such as Big Rock (16,500 metric tons) in Alberta.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).