Godavaya is located on the coast of Sri Lanka. Here Sri Lankan and German archaeologists excavate the old Kingdom of Ruhuna, gathering evidence of its glorious past. Excavations have been carried out since 1994, under Professor Helmut Roth of the University of Bonn in Germany, along with the Sri Lankan Archaeological Department, directed by Director General Dr. W. H. Wijeyapala, and the German Archaeological Institute (DAI).

Recently they excavated the temple area of Gotha Pabbatha Rajamaha Vihara in Godavaya. The temple area was not only religious, but it was also used as an administrative centre during the reign of King Gajabahu I. A unique Brahmi inscription on a rock next to the ancient shrine room clearly states that this was indeed a significant sea-trading place. True to Sri Lankan tradition, Ahalaya, one of King Gajabahu's ministers, has immortalized himself by getting his name carved in an inscription on this rock.
In ancient times, Sri Lanka was heavily involved in the sea trade and exported dark red garnets. Up to the 7th century AD, these semi-precious stones were found as burial objects as far away as European graves. New research has now revealed that most of those garnets were from India and Sri Lanka. Spices were also exported from the island. The dig has uncovered Sassanian (Persian) and Chinese pottery as well as Roman coins.

Ships from the East carrying silk from China exchanged their commodities with merchandise from the West in the transit harbor of Godavaya, as trade ships from both directions usually did not go farther than Sri Lanka. Therefore, the Kingdom of Ruhuna played an important role as a trade center in early East-West trade. Godavaya was active in sea trade up until the 6th century AD. Along with trade items from Arabia and China, local articles of trade arrived via the local river.
The harbor town of Godavaya is mentioned in the Mahawamsa's chapter on "The 12 Kings". Even in early western books like the Topographia Christiana of the 6th century AD, Sri Lanka is referred to as an important sea trade centre on the Silk Route. Sri Lanka is also mentioned in The Periplus Maris Erythraei, a guide to trade on the Red Sea and India, writen by an author in Alexandria, supposed around 40 AD.

On top of the rock overlooking the entire area was a monastery, which dates back to the 2nd century AD. On the west side of the monastery an elevated ancient image house (Buddhu gedera) and a chapter house (Dharma salawa) have been excavated.
Three different statues were discovered here: A standing Buddha about 3.50 meters tall and two Bodhisattva statues each about 1.80 meters in height. These statues even have traces of the original color. The source of the color is still a mystery, but it has withstood the weather over many centuries.

Historians have been especially interested in the Customs Building, located on the east side of the ancient monastery, which was decorated with ornaments showing an elephant placing his trunk in lotus flowers. Normally, only the King was allowed to collect taxes. In Godavaya, the tax fees were donated to the temple for its maintenance. Clay seals bearing the emblem of a lion were used to seal goods and cargo as proof that the customs duty was paid.

At the bottom of the rock was the settlement of Godapavata Pattana, sandwiched on the peninsula between the Walawe River's inland harbor and the sea harbor in the bay of Godavaya. A landing jetty constructed of stone pillars up to 3.50 meters high was part of the ancient harbor. While doing an underwater survey, the excavation team found one of the four ancient stone anchors discovered so far in Sri Lanka, the other three being found in Galle.

Several Roman coins, beads, bangles, bricks showing guild marks in the shape of an O, a huge selection of pottery and rich decorations used for roofs and houses give clear evidence of a once prosperous time. A quarry was also discovered. One large pillar covered with many drill marks dating to the middle Anuradhapura period before the 5th century AD, lies in front of the huge rock close to the ocean. This is quite notable, as very few quarries have been documented.