At the Earth's Core

Edgar Rice Burroughs' 1914 fantasy novel, "At the Earth's Core," plunges readers into a thrilling adventure. The story follows mining heir David Innes and inventor Abner Perry, who, while testing an experimental drilling machine, inadvertently bore 500 miles into the Earth's crust. There, they uncover Pellucidar, a hidden hollow world teeming with prehistoric life. This primeval land is ruled by the intelligent yet ruthless Mahars, who hold primitive humans in bondage. Innes must adapt to this strange new world, win the affection of Dian the Beautiful, and ultimately spearhead a human rebellion against their reptilian oppressors to secure freedom for humanity.

Reading ease score: 73.8 (7th grade). Fairly easy to read.