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Genre**: Adventure, Drama, Fantasy, Sci-fi, Seinen
Author: Akihito Tukushi
Serialization: Manga Life Win
Publisher: Takeshobo
Description: The enormous cave system, known as the Abyss, is the last unexplored place in the world. Nobody knows how deep down goes this titanic pit, inhabited by strange and wondrous creatures and full of mysterious ancient relics which purpose in unknown to modern man. Generations of bold adventurers have been drawn by the cryptic depths of the Abyss. In course of time those brave enough to explore the dangerous pit came to be known as "Cave Raiders." In Oosu, the town at the edge of the Abyss, there lives a little orphan named Rico, who dreams of becoming as great a cave raider as her mother was and solving the great mystery of the pit. One day exploring the murky depths she stumbles upon a little boy, who turns out to be a robot…
5 volumes and ongoing
first volume scanlation (credit to /a/)
https://mega.nz/#F!zAwBRbAA!rVowK7zl7cW9M-qNjmRJkw
http://laurenjaylin.imgur.com/
a really cool adventure manga with a very unusual art, chapters don't get scanlated that often but it's getting an anime soon so hopefully that will change
anime pv: