One of the last lowland Mayan cities to collapse, existing well into the 9th century, Quirigua, lies today in the still grasses of the Motagua Basin. The ruins of Quirigua are found amidst a banana plantation established at the turn of the century by the United Fruit Company. Some of the executives of the United Fruit Co. were interested in archaeology and decided to keep the central plaza from being plowed over. The surrounding smaller buildings are now part of the banana plantation. Nine monolithic sandstone monuments, called stelae, with dated texts of hieroglyphs, defining the beginnings and the end of the Classic Period of Maya Civilization, from about 300 to 900 AD, is what makes Quirigua an attraction to archeologists. The stelae remain the principal written chronicles of this lost civilization, as well as the key to their highly advanced calendric system. Other Mayan centers erected stelae much earlier and in greater profusion, but the stelae at Quirigua are unsurpassed in their style and technique. Like most Mayan monuments, they were erected to commemorate the passage of time, significant historic events, and also served as “billboards advertising the kings‘ standings with the Maya gods“. During its brief period of erecting stelae, from the early 8th century until 810 AD, Quirigua was one of only two cities to regularly erect monuments marking the end of five-year periods (the quarter-katun, or hotun).