Infinity, what a important question u have raised. Unfortunately, u couldn't evoke any response from the sajhabasis. Yes, as u mentioned a 'BIG' earthquake in our region is an eventuality - it can occur anytime - now, after a year, after 10 years or after 50 years. Urban centers like KTM are going to suffer the most - maybe 90% of the houses will crumble down in such densly populated areas if shaken by an earthquake of high magnitude ( 7.0 or above). Hundreds of thousands of people wouldl also perish.