One Gumuk, with three name.

In Kalisat district, Jember, there is a hill known by three names—Blanggur, Taman, and Murni. The name "Blanggur" comes from a local tradition where firecrackers called "mercon blanggur" were ignited at the hill’s summit to mark the beginning of Ramadan and continued daily throughout the month to signal the time for breaking the fast. While this custom is not originally Islamic and is more closely tied to Chinese cultural celebrations—reflecting the Chinese invention of gunpowder—it became part of Kalisat’s local heritage. During the Dutch colonial era, the development of Kalisat as a railway junction involved Chinese entrepreneurs settling in the area to boost the economy. The station opened in 1897, and by the following year, several Chinese-owned stores were established, fostering cultural exchange that likely introduced the blanggur tradition. 

Nearby Bondowoso practices a similar custom of lighting a large cannon called "blanggur" at the start and end of Ramadan to signal prayer times. Kalisat itself once had two artillery cannons, remnants of its past as an artillery training center before 1975, which further explains the local memory of the blanggur tradition until government bans on firecrackers during Ramadan.

The name "Taman," meaning garden, originates from the Dutch colonial period when a large garden and swimming pool occupied the hill’s slopes. This pool is believed to be older than the well-known Rembangan pool nearby. Historical photos show the pool was well-maintained as late as 1938. Unfortunately, European cemeteries that once existed in the area have mostly disappeared, with one now replaced by the Glagahwero Village Hall. These cemeteries could have provided insights into the European families who likely enjoyed the pool.

All rights and photos belonged to  Sudut Kalisat and related sources