alt Hacker NewsI found a sea shell in a visit to Latamber in Pakistan (NWFP): https://www.flickr.com/photos/hendry/73369720/
Gemini says "As the crow flies (Straight-line distance): Approximately 900 to 920 kilometers (roughly 560 to 570 miles) directly north of the coast at Karachi"
Maybe some geology buffs can correct me, but as I understand it there has been three periods with ocean on top of the crust we call Pakistan today. The Proto-Tethys, Paleo-Tethys, and Tethys Ocean. Many hundreds of millions of years of being ocean.