Complex sentence: Linga is a symbol of worship of the Hindu God, Shiva and its on the auspicious day of Mahashivaratri when thousands of pilgrims visit Sahasralinga to offer their prayers to Shiva.
Split into simpler sentences: Linga is a symbol of worship of the Hindu God, Shiva. On the auspicious day of Mahashivaratri thousands of pilgrims visit Sahasralinga to offer their prayers to Shiva.