the mosque was a part of a grand haveli built by the sultan Raja Jahandad khan... its info is available in following article which shud be authentic...
139-year-old mosque: Masjid Rajgan falls ‘prey’ to neglect - The Express Tribune
the haveli is now no more as it was destroyed by WAPDA as a result of some Land dispute and claim issues which is very very unfortunate.. i read abt the haveli in Salman Rashid's article and his r the only available pics now online at least.
Salman Rashid: The House that Jahandad Built
the mosque can be reached by car and a little walk across the fields. it is easily visible from the main boating spot of the lake.if someone duznt wana go through the entire article abt mosque here r some excerpts
"Masjid Rajgan, famous for its name, was built in 1872 by Raja Sultan Jehandad Khan, the grandfather of senior parliamentarian and former Chief Minister of NWFP the late Raja Sikandar Zaman Khan. Raja Sultan Jehandad was also the founder of old Khanpur Town, which was later inundated by the Khanpur Lake, forcing its population to resettle in new Khanpur and other adjoining areas in the late 70s."
"According to local elders, as well as his family members, Jehandad Khan invited architects of Islamic Art from Dehli to construct the mosque in the valley.
The architects used bricks and beautifully chiseled black stones to construct the mosque, locals said. Wood, used for doors, cupboards and the roof, was imported from Leepa Valley. The historic mosque, a symbol of old Islamic architecture, has two big and two small minarets, with a dome-shaped small minaret mounted in the center."
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The mosque is surrounded by water through July and September when the Khanpur Lake is filled to the maximum conservation level. Such damp conditions have been least favorable for the structure, which has been left at the mercy of the weather.
The mosque?s beautiful, carved wooden doors have been stolen, making it a comfortable abode for stray animals.
Under the Antiquities Act 1975, the mosque qualifies as being declared a preserved antique by the department of archaeology. However, despite devolution of the archaeology department to the province, the department has not taken any steps to rehabilitate the ruined structure of the mosque or declare it an archaeological monument."