Also in addition to these drums, the dhōlki is also used by many musicians - though this drum is believed to have descended from those brought to Sri Lanka from India - unlike the aforementioned instruments; which are believed to have existed in Sri Lanka prior to the arrival of the first Indian explorers (though this is difficult to verify due to the proximity of the two nations to one another - it is impossible to say, with any degree of certainty, that no cultural exchange occurred between the peoples of southern India and Sri Lanka prior to any particular date in history).