How to map an Ancient Burial Cave

I came across an Ancient Burial Cave in one of my hikes and wanted to map it.
Looking at available options for OSM tags I couldn’t come to a conclusion.
Possibilities:

  1. http://wiki.openstreetmap.org/wiki/Tag:historic=archaeological_site
  2. http://wiki.openstreetmap.org/wiki/Tag:historic=tomb
  3. Something else I might have missed.

you can find two examples here, I changed one from archaeological_site to tomb and added the second one:
http://www.openstreetmap.org/edit#map=17/32.64257/35.07006