The Secluded Coliseum can be found to the east of Sohse Lightroot in the Depths.

Coliseum Location

The Secluded Coliseum is located to the east of Sohse Lightroot in the depths, northeast of Bubinga Grove.

Coliseum Combatants

Approach the treasure chest in the Secluded Coliseum and you will battle Fire-Breath Lizalfos, Ice-Breath Lizalfos, Electric Lizalfos, a Silver Lizalfos, then a group of all four types.

Coliseum Reward

The reward for defeating all of the Lone Island Coliseum enemies is Ravio's Hood.