400-year-old tunnel discovered during restoration at Lahore Fort

According to The Express Tribune, the tunnel discovered at the opulently designed Mughal fort — that already houses over 20 key monuments — is still firmly in place.

The 625-feet tunnel is well ventilated and lighted, and consists of niches that have been made for lighting lamps.

As per the opinion of experts, the tunnel was used as drainage and secret passage.

While modern machinery and equipment are used for the restoration of historical monuments, the archaeology team has done it successfully in the traditional fashion.

“Snakes and scorpions were also found during the excavation,” experts said, adding that traces of it were found during excavation on another restoration project.