Answer : 1. "गागरोन"
Explanation :

1. The Dargah of Sufi saint Mitthe Shah is located in Gagron Fort.

2. Gagron Fort is a hill and water fort and is located in the Jhalawar district of Rajasthan.

3. A big event takes place every year in the month of Moharram, in which hundreds of Muslims gather to worship at the Dargah of Sufi saint Meethe Shah.