What are triangulation points?

Triangulation points, also known as survey markers or control points, are fixed locations on the Earth's surface used in surveying and mapping to determine precise geographical positions. These points are established through a process called triangulation, which involves measuring angles from known locations to calculate distances and positions. Triangulation points are crucial for creating accurate maps and are often marked with physical monuments or markers. They serve as reference points for various applications, including land surveying, construction, and navigation.