Ulu Cangkir is a small, scenic waterfall tucked into Bali countryside that you typically reach by motorbike or car along a narrow road, then finish with a 10 to 20 minute uneven, often slippery trail with stone steps, so wear grippy shoes. Expect a small entrance and parking fee, almost no formal facilities, and only basic local stalls for drinks, so bring water, a towel, and insect repellent. You can usually swim in the pool but check depth and currents first and avoid visiting after heavy rain when flow and rocks get dangerous. Go in the early morning or late afternoon for softer light and fewer people, and be prepared to tip attendants or guides if you ask for help.