This artwork is the outlet of a drain dating back to 12th century AD, which was used in important buildings and temples mainly to drain out rainwater from the roofs. A gargoyle is an amazing outlet mostly engraved as human or animal shape which functions as a duct to carry the water away.
This masterpiece of art depicts a mythological sea creature and a Yaksha on its mouth which must be a depiction of a mythological story. This structure is a symbol of the advanced architecture of that time through which various problems of the society were addressed in an effective manner.
Truly the skilled craftsmanship and use of this artwork is astonishing.