Picture: borobudur.tv
Pawon Temple is not a grave but as a place to keep King Indra's weapon namely Vajranala. Tiny temple 2 km east of Borobudur, contains a Buddha statue. The temple's style and the relief carved on the wall resemble most Javanese Hindu Temple.
Pawon Temple is one and half kilometers westward from Mendut Temple and eastward from Borobudur Temple; it is also a Buddhist temple. When appreciating in detail, its sculpture is the beginning of Borobudur sculpture.
This temple was built with volcanic stones. Architecturally it is a blend of old Javanese Hindu and Indian art. Pawon temple is exactly in the central point of the straight line stretched from Borobudur to Mendut Temple.
Perhaps it was built for kubera. It is on a wide rather terrace with steps. All parts are decorated with stupa(s) on dagoba(s) and its outside walls with symbolic pictures.
Source: indonesia-tourism.com