Overview
The southwest coast of Sri Lanka contains several coastal cave formations — natural sea caves, rock arches, and eroded cliff sections carved by the Indian Ocean wave action into the bedrock of the coastline. These formations are scattered along the coast between Hikkaduwa and Unawatuna, accessible by boat or by wading at low tide, and they provide geological interest and photographic subjects of considerable visual drama. The most accessible examples are near the Hikkaduwa reef zone and along the Unawatuna headlands, where the combination of clear water, dramatic rock, and the filtered light within the cave interiors creates extraordinary photography conditions.
Highlights
- Natural sea caves and rock arches carved by Indian Ocean wave action
- Found along the southwest coast between Hikkaduwa and Unawatuna
- Accessible by boat or wading at low tide
- The filtered light within cave interiors creates dramatic photography
- Geological interest in the erosion patterns on the coastal bedrock
- The combination of clear water and cave rock architecture
- Most dramatic in the morning light when sun angles are low
- Part of the coastal geology of the southwest seafront
Best Time to Visit
Low tide, morning. November–April for calm conditions.
Activities
- Cave photography from boat
- Low tide wading exploration
- Coastal geology study
- Combined with reef snorkelling
| Detail | Information |
|——–|————-|
| Location | Hikkaduwa to Unawatuna coastline |
| Type | Natural sea caves and rock arches |
| Best Time | Low tide, morning, November–April |
| Access | Boat or low tide wading |
| Distance from Colombo | 98–125 km south |
—