elians as using two kinds of ships, the piratica and the liburna. The former was a warship, the latter mainly a merchant ship. A piratica could carry approximately 30 men and had a high prow shaped like a dragon or a snakehead as well as a quadrangular sail.
Viking-age treasures from Estonia mostly contain silver coins and bars. Compared to its close neighbors, Saaremaa has the richest finds of Viking treasures after Gotland in Sweden. This strongly suggests that Estonia was an important transit country during the Viking era.
The superior god of Oeselians as described by Henry of Livonia was called Tharapita. According to the legend in the chronicle Tharapita was born on a forested mountain in Virumaa (Latin: Vironia), mainland Estonia from where he flew to Oesel, Saaremaa The name Taarapita has been interpreted as "Taara, help!"/"Thor, help!" (Taara a(v)ita in Estonian) or "Taara keeper"/"Thor keeper" (Taara pidaja) Taara is associated with the Scandinavian god Thor. The story of Tharapita's or Taara's flight from Vironia to Saaremaa has been associated with a major meteor disaster estimated to have happened in 660 ± 85 B.C. that formed Kaali crater in Saaremaa.
Middle Ages
At the beginning of the 13th century, Lembitu of Lehola, a chieftain of Sakala sought to unify the Estonian people and thwart Danish and Germanic conquest during the Livonian Crusade. He managed to assemble an army of 6,000 Estonian men from different counties, but he was killed during the Battle of St. Matthew's Day in September 1217.
In 1228, in the aftermath of the Livonian Crusade, to the 1560s, Estonia became part of Terra Mariana, established on 2 February 1207 as a principality of the Holy Roman Empire and proclaimed by pope Innocent III in 1215 as a subject to the Holy See. The southern parts of the country were conquered by Livonian Brothers of the Sword who joined the Teutonic Order in 1237 and became its branch known as Livonian Order
