I can't find anything online, but I can recall reading that Christian heathens were buried vertically, because this meant that they could not enter heaven. Is t

I can't find anything online, but I can recall reading that Christian heathens were buried vertically, because this meant that they could not enter heaven. Is there anything like this in other religions (especially other monotheistic ones)? There'll be plenty of non-religious folks who could opt for this or another form of vertical burial, but I wonder how many people or their families would simply opt for the traditional, religious burial.