The Tupopdan (also Tlipobdan ) is a mountain in the northern Karakorum in the Pakistani Special Territory Gilgit-Baltistan .
The summit, with a height of 6106 m (according to other sources 6125 m ) forms the southwestern end of the Ghujerab Mountains . The Tupopdan rises 12 km north-northeast of Passu . On its southwestern flank, the Shimshal flows into the Hunza . The Tupopdan towers above the valley floor at 3500 m. 4.35 km further northwest is the 6055 m high Jurju Khona Shar .
The name of the mountain means something like "a piece of sun". Other names of Tupopdan are Passu Cones (Passu Cone) or Passu Cathedral (Passu Cathedral).
The Tupopdan was first climbed in 1987 by a five-member British expedition.   Andy Cave and John Stevenson reached the summit on July 6.  The ascent route led through the Markhun Valley to the north side of the mountain and over the northeast ridge to the summit.
Address: Karakoram,Boiber Valley,Pakistan