The Althing formed around the year 930, about 60 years after humans arrived on the island of Iceland. It started as a meeting of the country's most powerful leaders. They met to make laws and rule on matters of justice. All free men could attend the assemblies, which were usually the main social event of the year. Forming the centre of the meeting place was the "lögberg" (law rock), a rock where the speaker of the assembly sat. It was his responsibility to say the laws and decisions out loud to the people.