Patomskiy crater or Patom crater (, (Patomskiy Krater), also known as , Konus Kolpakova Kolpakov cone) or Fire Eagle Nest is a peculiar rock formation located in the Bodaibo District of the Irkutsk region of southeastern Siberia, from the district center Bodaibo. It is a large mound made of shattered limestone blocks on the slopes of the Patom Highlands in an area of dense taiga. Its base diameter is about and its height about ; the cone's crown is ring-shaped, and in its center there is a smaller mound with a height of about . The volume of the crater is estimated as , with a weight of about one million tons.