Where is Hell
The interior of the earth fits the description of Hell because it is hot there (Luke 16:22-24; Jude 1:7; Deuteronomy 32:22; Psalm 86:12-13). It is possible that Hell is someplace else down it is also possible it is at the center of the earth.
The interior of the earth also fits because it is dark there (Jude 1:12,13; Jude 1:6; 2 Peter 2:4; 2 Peter 2:12-17;
The interior of earth fits the description because it is described as a lake. The earth is a molten lake of lava down there. The description fits perfectly with the hot, dark lake of fire (Revelation 19:20; Revelation 20:10; Revelation 20:14-15).
Isaiah 5:14 speaks about Hell enlarging herself. There is a discussion among the scientists of whether the earth is expanding. Some of these scientists say that in the oceans, the new volcanic material keeps being added along the fault lines in the crust expanding it a little bit at a time. I do realize that much of what is called science is not true at all. In 1 Timothy 6:20-21 says to avoid vain and profane babblings and oppositions of science falsely called: which some professing have erred concerning the faith.
It is interesting that just before the Lord destroys this old earth and makes a new one, He is going to resurrect everyone out of hell, and then cast them into the lake of fire (Revelation 20: 11-21:1).
This is an interesting question but this question should not be consuming our time. The fact is hell is real and the majority of people are going there (Matthew 7:13-14)