Translation of verhängnisvoll

Everybody knows about the Indian summer which is famous for it strong and shiny atmosphere in the woods. That is why i wanted to see it too. So, last Saturday morning we left Boston and drove North-West.
We had time to walk around the waterfall but refrained from entering the little lake at the bottom. My fellow tourtakers were quiet nice and we spend a while just sitting in the grass near the water.
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