An-Najm 53:15

عِندَهَا جَنَّةُ الْمَأْوَىٰ (near which there is Jannat-ul-ma'wa [ the Paradize of Abode ],... 53:15) The word ma'wa means 'abode' and a place where one resides or reposes comfortably. The Jannah (Paradize) is called ma'wa because this is man's original abode. This is where 'Adam and Hawwa' (علیہما السلام) were created; from here they were sent down to the earth; and this is where the people of Paradise will be sent back to reside permanently.

The Present Locale of Paradise and Hell

This verse verifies that Paradise exists at the present moment, as is the belief of the overwhelming majority of the Ummah. They believe that Paradise and Hell have been created and are already in existence. This verse pointed out that the location of Paradise is on the seventh heaven under the Divine Throne. In other words, the seventh heaven is, as though, the floor of Paradise and its roof is the Divine Throne. The location of Hell is not explicitly stated anywhere in the Qur'an or Prophetic Traditions. Some scholars of the Qur'an deduce from the verse [ 6] of Surah At-Tur وَالْبَحْرِ‌ الْمَسْجُورِ‌ (and by the sea, filled up with fire,) that Hell is situated beneath the sea in the deep recesses of the earth which are presently hidden under some heavy covering. On the Day of Resurrection, it will be split asunder, and the sea will be kindled, thus turning the entire ocean into a raging and blazing fire.

Many European excavators and explorers of the current age made attempts to dig into the ground in order to build roads so as to travel around from place to place for many long years. For this task, they invented the largest and most sophisticated machinery. Various groups of scientists and experts exerted efforts in this direction. The most successful group was the one who by means of various types of machinery was able to dig six miles deep into the recesses of the earth, but beyond that they came across immovable rocks which frustrated them. They attempted to excavate in another place and dug for six miles and again came across unshakeable rocks beyond which they could not dig. In this way they experimented in many places and came to the conclusion that beyond the depth of six miles into the recesses of the earth there is a rocky covering on the entire earth at that level where no machinery can penetrate. The earth covers thousands of miles in diameter but despite advances and strides made in sciences they could have access only to the depth of six miles. Beyond that point they acknowledged the existence of impenetrable rocky covering and abandoned their attempts. This scientific experiment to excavate and explore supports the notion that the entire earth is covered with adamantine rocks, and access beyond them is not possible. If any authentic narration proves the location of Hell in this rocky covering, it should not come as a surprise. Allah knows best!