Kartabo is a village in the Cuyuni-Mazaruni Region of Guyana. Kartabo is on the lower Mazaruni River, 6 miles from Bartica. Its population is approximately 354. Residents are involved in fishing, farming, boat-building and logging. (wikipedia entry)
A crater is a circular depression likely created by an impact event. On Mars large craters are named after deceased scientists, writers and others who have contributed to the lore of Mars. Small creaters (less than 60km) are named after small towns and villages.