ilulähteen
Ilulähteen is a geological formation located in [insert geographical location here, if known, otherwise omit]. It is characterized by [describe key geological features, e.g., unusual rock formations, mineral deposits, unique soil composition]. The formation's name, ilulähteen, is derived from [explain the etymology of the name, if known, otherwise omit].
The geological processes that led to the creation of ilulähteen are believed to be [describe the geological
Historically, ilulähteen has been of interest to [mention groups or individuals, e.g., geologists, archaeologists, local communities]