Original: Other important archaeological remains include the carved stone slabs usually called stelae (the Maya called them tetun, or "tree-stones"), which depict rulers along with hieroglyphic texts describing their genealogy, military victories, and other accomplishments.
Simplified: Other important things the archaeologists found  include the carved stone slabs usually called stelae (the Maya called them tetun, or "tree-stones"). These slabs show rulers along with hieroglyphic texts describing their genealogy, military victories, and other accomplishments.