The Thracian Tomb in Pomorie is located just South of Pomorie at the E87 main road, just across from the Camping Site.

Park at the small parking space next to the road and walk up to the tomb along the orchard.

The front of the tomb, with its entry on the South side of the tomb.
The tunnel leads to the burial chamber in the center of the tomb.
This is the door into the burial chamber itself. It is not as well preserved as the Thracian Tomb in Kazanlak, but still very much a visit worth in its own rights.
This is the view from the top of the tomb towards Pomorie. Old Pomorie is to the left and the new buildings at the South beach to the right.
If you get to the Thracian Tomb in late summer or early fall, you'll be able to pick peaches from the trees in the orchard next to the tomb.