What was the major finding at the Surkotada City of Indus Valley Civilization?

An archaeological site, Surkotada is located in Rapar Taluka of Kutch district, Gujarat, India. This place belongs to the Indus Valley Civilisation. Surkotada is a smaller fortified IVC site with 1.4 hectares (3.5 acres) in area. 

Surkotada

This was a little brief about the site, and the answer to your question is the Skeleton of Horse.