unexplored, unexploited, untapped, unmapped, undeveloped, unrecognized, unknown, unsurveyed, palaeontological, unbooked, unmined, uncharted, hidden, unrecorded, undetected, undisturbed, unspoiled, treasure trove, undiscoverable, obscure, untouched, unspoilt, unseen, rubbly, unstudied, unplumbed, pallasite, unsung, uninhabited, uncovered, inaccessible, minable, exploitable, undiagnosed, unacknowledged, unchartered, sebastian vizcaino, producible, terra incognita, unsuspected, unreported, archaeo, recoverable, seismologic, campanian, cretaceous, unrevealed, underdeveloped, cryptozoological, unobserved, palaeo, mother lode, upper carboniferous, unsolved, illimitable, unimagined, uncounted, coprolite, unappreciated, spookiest, abiogenic, unexamined, explorable, untested, geologic, fathomless, untrodden, john hanning speke, unaddressed, semidesert, lithic, uncategorized, uncelebrated, prehistoric, unexplained, subaqueous, cenozoic era, latent, prehistorical, unknowable, unnoticed, dormant, unfathomed, unconsidered, paleontological, carboniferous period, datable, petroliferous, snailfish, palaeocene, undersea, exhaustible, cryptid, floristic, biogeographical, sauropod dinosaur, palaeozoic, unclaimed, geological, extinct, paradisiacal, carboniferous, discovered, immaterial, knowable, nonmaterial, faroff, inhabited, overlooked