Holmul, Guatemala is a remote Maya archaeological site near the border with Belize. The site was first located by the 1909-1910 expedition from the Peabody Museum of Archaeology and Ethnology at Harvard University. Late in 1910 the next Peabody expedition returned with Raymond Merwin as director and his younger brother, Bruce Merwin as his assistant. Over the next several months what they found was different from anything previously found at a Maya site. It was here that Raymond preformed the first stratigraphical study of a Maya ruin. This study revealed for the first time that the Maya built new structures on top of older structures. Inside the pyramid was the first royal burial tomb located in a structure, complete with a collection of ceramics large enough to produce the first ceramic sequence in Mayan studies.
The Peabody Museum Expedition of 1909-1910
In order to complete the report on Tikal the Peabody Museum had requested from Teobert Maler, which he had not finished because he wanted additional money, the Museum organized a Expedition in 1909.