Aruvikkara Dam was once a recognized picnic spot, but is now disregarded by all. Hard to reach here (roads filled with potholes), no amenities (plenty of 'scope' for boating and other activities), & no refreshment (except a DTPC restaurant), you can just come here, relax for a few minutes on the lawn, whine how badly this location is kept and return home with nothing much to think about.
Aruvikkara Dam is just 16 km from Trivandrum city.