Subduction also generates an upwelling of molten crust that forms mountain ridges and volcanic islands parallel to the trench. Examples of these volcanic arcs can be seen in the Japanese Archipelago, the Aleutian Islands, and many other locations around this area called the Pacific Ring of Fire.. Trenches are long, narrow and very deep and, while most are in the Pacific Ocean, can be found around the world.
Portland Head Light, South Portland, ME - 1791. One of the most photographed and popular lighthouses in the country because of its beauty and spectacular views, its history and its literary associations. Built by authorization of George Washington: Maineâs oldest light, Portland Head, was originally authorized in 1787 by the Commonwealth of Massachusetts.
Point Reyes Lighthouse. No trip is complete without a visit to the Point Reyes Headlands and the iconic Lighthouse. Whether you are an avid birder, whale watcher, geologist, or a maritime or lighthouse enthusiast, this popular destination has it all. The rock lover in your group will enjoy learning more about the natural history of Point Reyes which starts with a closer look at the areaâs geologic foundation.