NIS Summer School: Week 1 – Day 4NIS Gallery, Summer School 2018 / By admin On 5th July 2018, Group C visited Tube Trek Water Park in Chiang Mai. Upon arrival, the students were able to explore and play in the water. They enjoyed various water activities including slides, lazy river, and wave pool. It was a blast! [Show slideshow] 1 2 ►← → x ×