Pre-Neogene basement in the East Slovakian part of the Transcarpathian Depression is built by complexes of calcphyllites, phyllitic schists, graphitic schists (Schwarzschieferhorizonten), marbly limestones, metatuffites, etc., which, in the upper parts, pass into the sediments that become more flysch-like in character (Inacovce-Krichevo unit). They contain Alpine-type ultrabasites on different degrees of alteration - peridotites, lizardite-chrysotile serpentinites up to talcchlorite schists. As for age, these over a thousand metre thick sequences belong to Uppermost Paleozoic, Mesozoic till Eocene. The complexes were influenced by post-Eocene thrusting, syntectonic metamorphism under anchi/epizonal conditions, and shearing processes recognizable through a slate cleavage, stretching lineation, crenulations, strong isoclinal overfolding, etc. The described Penninic-like complexes occur in the space where 'the sub-Tatric nappe pile was tectonically unroofed by the mechanisms of a "pull-apart" dome.