The Land That Time Forgot was originally published in three parts-The Land That Time Forgot, The People That Time Forgot, and Out of Time's Abyss. Each is written from a different character's point of view, and they follow a slightly overlapping and simultaneously progressive timeline. In the Land That Time Forgot, the story starts with an initial finding of a manuscript in a bottle, which describes the attack of a German U-33 on a boat, and the adventures of Bowen J Tyler, Jr and the ragtag remnants of the U-33's crew and the crew of a ship the submarine came across, and was captured by upon the destruction of the English ship.. In The Land That Time forgot, we are introduced to Caspak, a mysterious island filled to the brim with prehistoric creatures and "proto man". In The People That Time Forgot, we follow Tom Billings, who set out to find Bowen Tyler and rescue him, and who inadvertently has his own adventures among the various indigenous peoples of Caspak. Finally, in Out of Time's Abyss, we follow Lt. John Bradley, part of the crew of the English ship the U-33 was overtaken by, as he sets out to explore and gets significantly more than he expected.
If it isn't obvious, I love the writings of Edgar Rice Burroughs. His characters are not stiff or unnatural or comical-they speak and act like real people. The world building is detailed and unique-Burroughs didn't make cookie cutter worlds, each was different, which is an incredible feat considering how prolific he was as a writer. The books reflect the time periods during which they were written, both in the scientific theories Burroughs sometimes used to base his world building upon, and in the historical events-The Land That Time Forgot took place just prior to the U. S. joining WW1, and the character interactions with the Germans reflect the time period well. The books also, more often than not, have a satisfactory conclusion-not a "they all lived happily ever after" ending, but a satisfying one. One that doesn't make you want to throw something after reading. The books are quite readable, and re-readable.
This particular set of tales gives us a view into many things-how Burroughs understood nature, how he understood humanity and the nature and moral center (or lack thereof) that people have. The characters are rich and interesting, and you find yourself completely immersed in the world Burroughs has created within the stony cliffs of Caspak, hoping that the people you have met will get home safely. I recommend The Land That Time Forgot for science fiction and adventure fans, or pulp fiction readers who have not taken the leap into Edgar Rice Burroughs.