What is upasana maluwa?

Some articles on upasana maluwa, upasana:

Sri Palee College - Upasanaya / Assembly
... with a small stage surrounded by large trees called Upasana Maluwa ... After the Assembly pupils walk as Upasana Perahara through the path around the Upasana Maluwa ... At the end of the Upasana Perahera, students stop above the Upasana Maluwa, in front of the Nimaline Hall (school office) and sing the national anthem ...