The first poster of 'PK' has been a topic of discussion as it has been trending ever since it was revealed.

Little does anyone know, the poster has been shot at a real location in Rajasthan and not in a studio. Its a real picture and not a chroma background.

After scouting for various locations, the team found a non-operational track in Rajasthan. 

The track was a couple of hours away from the city. The team zeroed in on the location and went great lengths to get the required permissions to shoot.

"The shoot details were kept underwraps largely and even the crew for this shoot was kept to a bare minimum. In addition to this, there were stringent security measures taken. Only a handful of people were allowed on sets and they had to go through the security procedure. They were made to deposit their phones and laptops at the hotel and travel to sets which was 2 hours away. Even when they reported on sets they were all frisked," revealed a source close to the film.