Ha ha ha.. gathering 10,00,000 (or 10 lakh poeple at one place) alone cannot build 350 km gravel road.

Do your math properly...

one thing can happen though.....

Line up 10 lakh people 0.35 m apart (or, 1 foot apart) and surely they will form 350 km long line,,, and they eventually can enter into the Guiness Book of Records !!!!!!