Recent archaeological discoveries about the Maya civilization are significantly altering our understanding of ancient Mesoamerican cultures. In 2020, the largest and oldest structure of the Maya civilization was discovered in Tabasco, Mexico. Known as the Aguada Fénix site, it features a colossal earthen platform measuring 1,400 meters north to south and 400 meters east to west, estimated to be around 3,000 years old, surpassing even the largest Egyptian pyramids in scale. In 2018, a LiDAR survey in northern Guatemala's jungle revealed over 60,000 ancient Maya structures, including a 27-meter-high pyramid previously thought to be a natural hill. These findings suggest that the Maya civilization was far more extensive and complex than previously believed. The population in the Maya lowlands might have reached 10 million, several times higher than earlier estimates. Advanced urban planning, including extensive road networks and defense facilities, indicates strong inter-city connections. Evidence also shows that the Maya significantly altered the terrain to boost productivity. Japanese researchers have played a crucial role in these discoveries. Ken Inomata from the University of Arizona led the study on Aguada Fénix, while Saburo Sugiyama contributed significantly to Maya research with his discovery of Maya-style murals in Teotihuacan. These new findings necessitate a reevaluation of the history and complexity of the Maya civilization, highlighting the need to reassess our understanding of ancient Mesoamerican development.