Why do people of the neolithic era put up megaliths instead of some other kinds of monuments?

People in the Neolithic era built megaliths as markers for burial sites, religious purposes, or to commemorate special events. The large, durable stones were readily available and served as a way to signify the importance of these locations in their society. Additionally, the effort required to move and position these massive stones may have been seen as a way to demonstrate power or strength.