There are none. Your point?
The Bible says men should not eat certain foods (pork for example). Yet men have learned over the years to properly treat such foods to prevent disease, to prepare and eat it safely.
Remember, Hell was previously Hadees, and before that Sheol. Over the years, and the bible was translated from language to language to language, and words and meanings were not always accurate. It went from a state of "absence of God" to a physical place of fire and torture.
My point is, we have learned over the years men have found that the Bible is not 100% correct. It can be wrong. And if it can be wrong about slavery, about eating certain foods, about where and how plants shall be grown on farms, etc then it can also be wrong about hell (which may be in the afterlife and only 1 man has returned from death and he didn't stop in that particular place). I have no quarrel with boundaries that have been set for us to live our lives, but I do have doubts about a place of hellfire for men who live good lives but don't believe every word in the Bible.