Neyyar dam, that bridles the Neyyar river is only 30kms from Thiruvananthapuram. Lying against the southern low hills of Western Ghats it is a popular picnic spot. For the adventurers, the forest around the dam and the lake offer trails that take them deep into some stunning places not frequently explored. The trail of Agasthyamala pilgrimage traverses through this forest. The best time to visit the sanctuary is from September to February. Monday is a holiday.