::I think this is merely an area of valid historical interest, not in being defensive. Unlike the Bastille, which is still standing to this day, Treblinka was little more than an empty patch of ground by the time anyone who wanted to find out the truth could get to it. This raises the valid question - and one that immediately came up to me even as a firm believer in the Holocaust - how did anyone find out what happened there in the first place? This is a fair question, and one that is not defensive. The site's history simply begs the question - if they completely destroyed the place, how does anyone know anything about it? I would point to articles covering similar situations of 'disappeared' sites that were rediscovered - Troy for instance, covers the discovery and digs of the city extensively.