The geology of the Northwest is extremely interesting. This region has features thaat cannot be seen anywhere else in the country. For example, this region is part of the Ring of Fire. This feature is a consequence of the subduction of the Pacific and Farallon Plates under the North American Plate. This is the main reason why the area has such scenic features, including volcanoes, earthquakes and landslides.
An isolated black hole in space would be difficult to detect because no light can escape a black hole. An isolated black hole would be difficult to detect because black holes can only be detected due to their visible effect on other celestial bodies.