For serious discussion of the controversies, approaches and enigmas surrounding the origins and development of the human species and of human civilization. (NB: for more ‘out there’ posts we point you in the direction of the ‘Paranormal & Supernatural
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The sarcophagus base and lid - at least in the series of images I posted, Daniel - is certainly NOT rectangular for they are curved at one end.
I chose photographs which enable you to view the object from a variety of perspectives to better inform your judgement.
Take a closer look (or book an appointment with an optometrist) because a rectangle comprises four straight lines and the lid, and base, are clearly rounded at one end.