[[1]] on the surface were used to signposts to find the burial site.

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Detailed Solution

Stone circles or boulders on the surface were used as signposts to find the burial site.
Megaliths are massive stone structures. They were used to mark the location of the burial. A megalith could be made up of a single large stone or several stones. Some megaliths may be visible above ground, but others may be underground. Stone circles or boulders on the ground were used to mark the exact location of burial. These structures are made of large stones interlocked together without the use of mortar or concrete. They were used to mark graves. The dead were buried in those megaliths, along with various items such as pots (known as black and red ware), iron tools and weapons, gold ornaments, horse skeletons, conch shells, and so on and various things were buried with people of varying ranks or status.

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