Kotasur (also spelled as Katasur) is a census town in Mayureswar II CD Block in Rampurhat subdivision of Birbhum district in the Indian state of West Bengal.

[1] Kundala Gram Panchayet The northern portion of Rampurhat subdivision (shown in the map alongside) is part of the Nalhati Plains, a sub-micro physiographic region, and the southern portion is part of the Brahmani-Mayurakshi Basin, another sub-micro physiographic region occupying the area between the Brahmani in the north and the Mayurakshi in the south.

There is an occasional intrusion of Rajmahal Hills, from adjoining Santhal Parganas, towards the north-western part of the subdivision.

A small portion of the Padma River and the border with Bangladesh (thick line) can be seen in the north-eastern corner of the map.

[citation needed] + It is one of the favourite picnic spots of nearby people of kotasur located in the bank of river Mayurakshi.