Coban Sewu (Tumpak Sewu), also known as Pronojiwo Tepian, is a tiered waterfall in East Java, Indonesia, that sits between the Pronojiwo District, Lumajang Regency, and the Ampelgading District, Malang Regency.
The spectacular waterfall in the middle of the lake is eclipsed by the active volcano Semeru, the highest mountain in Java. Semeru River has two major water sources: the Semeru Falls and the Glidik River.
“A thousand waterfalls” in the Javanese language translates loosely to Tumpak Sewu. It is possible that the name arose due to the illusion of multiple waterfalls in one semi-circular area.
Although it is a popular tourist attraction, Tumpak Sewu is visited most frequently on weekends.
It is now easier to access the area, even though a journey to enter or exit the canyon area still requires an hour of physically strenuous activity.