underground literature

Underground literature is writing produced, distributed, or circulated outside official or approved channels—typically to evade censorship, political repression, or commercial gatekeeping.

The term often refers to Soviet-era samizdat or dissident works passed hand to hand, but extends to any literary production operating beneath mainstream visibility: The novel circulated as underground literature for years before finding a publisher.

The underground aspect may be political, countercultural, or simply too transgressive for conventional publication.