Volcano an extinct volcano from a dormant (inactive) one. Dormant volcanoes are those that have not erupted for thousands of years, but are likely to erupt again in the future. Volcanoes are often considered to be extinct if there are no written records of its activity. Nevertheless, volcanoes may remain dormant for a long period of time. For example, Yellowstone has a repose/recharge period of around 700,000 years, and Toba of around 380,000 years. Vesuvius was described by Roman writers as having been covered with gardens and vineyards before its eruption of 79 CE, which destroyed the towns of Herculaneum and
Chaparral Prairie State Nature Preserve Chaparral Prairie State Nature Preserve Chaparral Prairie State Nature Preserve is a nature preserve located in Adams County, Ohio, United States, near the city of West Union. The prairie is a remnant of what was once a larger ecosystem. These grassland openings were probably created by the extinct megafauna, such as mammoths and mastodons, that were once found in the area. Native American fires may have also played a role in maintaining this landscape. In modern times the prairie species found refuge on the dry, rocky openings in this part of the state. Today, controlled burns are used at Chaparral