Book excerpt: The two main kinds of roads were "sacbe" and "highways." Sacbes were the smaller, more local roads which connected cities to each other. They didn't have any pavement on them, but they're still considered roads by many Mayan scholars. highways are bigger and connect cities with each other. The highways were built using a combination of natural materials and man-made structures such as bridges, ditches, rivers etc.. These structures helped make sure that people could cross waterways without getting their feet wet in the process. The sacbes were made with small stones placed side by side along their entire length; however there are some cases where larger stones used for paving stone can be found at regular intervals within this type of infrastructure – even though these do not seem necessary for walking across since you would fall through them anyway! Some of the roads were made by cutting down trees to make canals for them to cross over. The canals were built to drain water from the fields. The roads were built to carry people and goods, as well as help with trade, military campaigns and religious ceremonies. On top of all that, they also helped with agriculture by transporting food from one place to another. The Mayans also built bridges across canals for people to cross over, made artificial hills so that the canals could be channeled more easily, and even built aqueducts to bring water into their cities. The canals of the Mayans were an engineering marvel in their day, and they still stand today as a testament to the ingenuity of ancient civilizations. However, one thing is often overlooked: these canal systems were not just built out of dirt and stone; they also had many artificial hills that helped channel the water more efficiently. These hills weren't just for decoration—they were actually critical to how water flowed through the city. It is interesting but there are different theories about how their ancient engineering and technology was used. We can only speculate. Some scientists believe that the Mayans had mastered a complex understanding of astronomy and mathematics. They also believed that they had a detailed knowledge of where the sun, moon, planets and stars would be at any time throughout history. The Mayans were able to predict eclipses thousands of years ago with great accuracy using only simple tools like shadows on stones or trees as indicators of when an eclipse would happen. Some scientists believe that the Mayans used their engineering skills to build massive pyramids which still stand today as testaments to their greatness as an ancient civilization. There have been suggestions in recent times that some kind of unknown energy lies within these structures; some say it's electromagnetic energy while others say it's gravitational forces coming from deep within our planet Earth itself!