What is "Elephant Gathering" in Sri Lanka?

During the dry season from May to October several hundreds of elephants gather in a one area in Minneriya or Kaudull national parks. This spectacular phenomenon known as “The Gathering” and you get the chance to watch the highest concentration of Asian elephants in a single location.
Minneriya park is the most popular national park to watch elephant gathering and the receding bank of the Minneriya Lake are covered with hundreds of elephants in search of food and water. In 2012 Lonely Planet ranked, The Gathering, as the 06th on their list of the world’s best wildlife spectacles.