People have been finding hidden constructions for a while. The large urban conurbations such as around Ecuador are perhaps the most impressive (https://apnews.com/article/amazon-lost-cities-ecuador-archae...). While Archeologists have been driving the process almost anyone who spends time with recent LIDAR data finds something much as how publicly available satellite data has uncovered geological oddities. This is not a big advance. Getting an official report completed and creating a compelling image of what the site might have looked like is impressive, but also consistent with what ordinary untrained people have been accomplishing.