Northwest of the groups of tombs so visible from the access track, and in line with the field boundary, this tomb is just to the right of the path.
A short dromos, into a chamber with a central pillar and a niche opposite the entrance, and then two doors to the right. Climbing through, you're on a little rocky platform and the ground slopes away towards 4 doors set up from floor level and with a magnificent step to reach the farthest to the left, and a further chamber beyond the second left.
Something about this made me think of the fantastic Hal Saflieni Hypogeum on Malta - but on a much smaller scale of course. I spent what seemed like ages just sat enjoying the cool and the calm and the shafts of sunlight illuminating the entrance.
As in Tomb XVI a twice trepanned skull (image linked) was found here - though this person was not so lucky .... they didn't survive the second operation.
I couldn't believe my eyes when I found the plan of this tomb .....
The long dromos or corridor was partly flooded so I'd climbed down into in it where it narrows, and straight in to the main chamber (pictured) with doors at the centre of each of the walls. I'd also noted a chamber to the side of its antichamber, but didn't realise quite how extensive either part was. Take a look at the plan!
One of the most important tombs at this site, and we didn't find it. It's in the area of scrubby vegetation between the very visible tombs such as Tomb VIII and the buildings you pass on the track to get here - hence the grid reference is not absolutely accurate.
It was found still sealed with a slab, and finds included burials from around 2000BCE (though other finds have been noted from the much ealier Ozieri culture) and a twice trepanned skull.