Here is a set of maps on Kerala. Some are general rail, road routes. There others are to specific destinations.
Kerala Rail Map
See Also : Kerala Rail Map
Kappil is for those like solitude beaches. Obviously you'll not find the typical touristy paraphernalia at Kappil.
Boasted as the longest backwater cruise in Kerala, the Kollam to Alappuzha (Quilon to Alleppey) boat ride is an 8 hours affair. The route practically connects the two towns.
Kerala is distinctively unique compared to its larger neighboring states.