The floor was decorated with black, red, and yellow lozenges, but these no longer survive. There is a sarcophagus along the entire back wall, which is 1.3 m high, divided into two unequal parts. The left section once contained the actual sarcophagus, while the smaller section on the right held grave goods. The actual burial was a pit on the central axis of the tomb underneath the sarcophagus. Remains of a wooden larnax, which once held the remains of the deceased, were found in this pit, covered by cypress planks and four marble slabs. The remains of a tunnel dug into the tomb by grave robbers in antiquity are still visible in the southwest corner of the chamber. The tomb had already been looted and suffered earthquake damage when it was discovered and excavated in 1910 by Theodore Makridi, from whom it takes its modern name. Largely ignored for most of the twentieth century, further excavations were undertaken by Katerina Tzanavari in the 1990s, which uncovered part of the tumulus and a number of fragments which had become separated from the structure. An extensive restoration project was undertaken between 2012 and 2017, including extensive work to ensure the integrity of the tumulus, partially restore the structure (anastylosis) and ensure its structural integrity, protect it from the elements, and make it accessible to visitors.