__NOTOC__ Illsee is a natural lake used as a reservoir above Sierre, in the Valais, Switzerland. Its surface area is .
__NOTOC__ Illsee is a natural lake used as a reservoir above Sierre, in the Valais, Switzerland. Its surface area is .
==See also== List of mountain lakes of Switzerland
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).