The temple has a volatile and triumphant history. In 1785, Tipu Sultan occupied Bhagamandala, fortified the temple area, and temporarily renamed the town 'Afzalabad'. In 1790, King Dodda Vira Rajendra of Kodagu laid a massive siege, defeated Tipu's forces, and recovered the temple. To celebrate the victory, he restored the shrines and covered the sanctum roofs with pure copper tiles.

Karavali-Kerala Woodwork Mastery

Unlike the towering stone gopurams of Tamil Nadu, this temple is built in the traditional Karavali (Coastal) and Kerala architectural style. It features steeply sloping, multi-tiered roofs layered with red clay tiles and copper sheeting designed to withstand Coorg's torrential monsoons. The interior is an absolute masterpiece of ancient carpentry, featuring intricately carved wooden pillars and spectacular ceiling panels painted with vegetable dyes depicting various Hindu deities and mythological scenes.

According to the Skanda Purana, a great ascetic named Sage Bhaganda performed severe penance at this river confluence. Pleased with his devotion, Lord Shiva appeared and blessed him. The sage installed a Shiva Lingam at the site, which came to be known as 'Bhagandeshwara' (The Lord of Bhaganda).

Worship heavily incorporates the reverence of nature and water. The town is situated at the confluence of the Kaveri and Kannike rivers. Just like the mythical Saraswati river in Prayagraj, a third river named Sujyoti is believed to flow underground and merge here, completing the Triveni Sangam. Because of this powerful confluence, the riverbanks here are considered one of the most auspicious places in South India to perform Pitr Karya or Pinda Pradana (rituals for deceased ancestors).

The temple's turbulent history with Tipu Sultan has birthed modern local lore. It is said that during his occupation, three large cannonballs were fired into the temple courtyard. Instead of destroying the shrines, the cannonballs miraculously lost their momentum and sank into the temple grounds. Furthermore, locals deeply believe that the mythical underground river 'Sujyoti' possesses supreme healing properties, and that those who bathe here with absolute faith are cleansed of generational curses.

The temple witnesses a massive surge of pilgrims during the Tula Sankramana (usually mid-October). On this precise astrological moment, devotees believe Goddess Kaveri miraculously appears as a sudden, violently bubbling spring at the uphill Talakaveri shrine. Millions gather at Bhagamandala to bathe in the Sangam and pray before heading up the mountain to witness the miracle.