Thanks for asking a question on www.thisisyourbible.com
There is no literal lake of fire. There are only 5 occurences of this phrase in the Bible and all are to be found in the book of Revelation, chapters 19, 20, 21. Revelation is a book of symbols and the Lake of Fire is symbolic of destruction brought about by divine judgement. In Revelation 20:14, death and hell [the grave - cf 1 Corinthians 15:54] are cast into the lake of fire. Death and the grave are abstract things with no bodily form. How could they be cast into a literal lake of fire? Rather, the Apostle John is writing of that glorious time when death shall be no more.
Here is some information on the website which will help you with this question:
Heaven and Hell: www.thisisyourbible.com/library/show/41
If you want to come to grips with what the Bible really teaches, why not take the free Bible study course on www.thisisyourbible.com? You may take this course either online or by regular mail.
This course will give you a background in the major themes of the Bible from Genesis to Revelation. As with everything we offer, there is no cost to you other than your time and effort. You will also have a personal tutor to whom you may pose questions either from the course itself or those questions which come to you as you read the Bible.
I hope you have found this helpful.