Historical items

When I hear the words historical items, I think about something that is a object that has historical value like a book that tells stories of a persons life of a desk that had many important people sit nd work at it. but, the object I wish to talk about is the three sisters. the three sisters are three older volcanoes that has become inactive and can be seen for miles. For many people in Albuquerque it is a historical place that can show what history and what the area around the three sisters looked like because of the volcanic activity. I believe that if the three sisters are forgotten then we may never find out about thing that where so important and can stop us from finding answers for questions that we may have and may never get answers for.