Lake, the fresh water lake set in picturesque surroundings and surrounded
by hillocks on three sides is the largest of its kind in Kerala.
An ancient Sastha Temple on its shores, with resident tribes of monkeys, adds sanctity to the waters.
The majestic size of the lake is by itself a spectacular sight. The ancient Sastha Temple, which lends its name to the town, is an important pilgrim centre.
Covering an area of approximately 375 hectares, Shasthamcotta Lake does not get frozen in winter and fresh water is available 365 days a year. This large lake is totally devoid of any flora and there is no plant growth in the waters of the lake.
A larva called "Cavaborus" abounds in the lake. They eat up the viruses and bacteria in the water thus contributing substantially to the high degree of purity of the water.
Shasthamcotta Lake supplies drinking water to approximately 10 million people including the population of the Municipality of Kollam. This project was undertaken and completed by Indo-Norwegian consortium.
There are frequent bus services from Kollam.
Accommodation is available at the PWD Rest House.