At the Earth's Core
A huge burrowing machine tunnels out of control at ferocious speed, cutting clean through to the center of the earth, to the twilight world of pellucidar. Once there, Dr. Perry and David Innes are threatened by half human creatures, lizard-like birds, and man-eating plants.
Scurry
Two strangers find themselves trapped underground when the city is attacked by a monstrous threat. Badly injured with limited resources they must navigate a treacherous, narrowing tunnel in hopes of finding an exit.
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