Gaasyendietha, according to Seneca mythology, is a dragon that dwells in the deep areas of rivers and lakes of Canada, especially Lake Ontario. This dragon could fly on a trail of fire, and it could also spew fire.It is also known as the ‘meteor dragon’, in reference to its supposed origin from a meteoroid that had impacted the Earth. It is also capable of crossing the heavens on a trail of fire. “Gaasyendietha” who, according to Seneca mythology, is a dragon that dwells in the deep areas of Lake Ontario where there has been (of course!) discovered a meteor crater.