The Perun-Veles Conflict (reconstructed)
In the reconstructed 'Perun-Veles' conflict, the sky-thunder-god Perun and the underworld-serpent-god Veles are in opposition. This is a scholarly reconstruction (Ivanov & Toporov) of an Indo-European 'sky-father vs. underworld-serpent' duality, not a single attested Slavic myth [S6]S6 · Modern comparative reconstruction (e.g., Ivanov & Toporov, 'Theses on Slavic Mythology')1970s-2000sacademic. The 'conflict' is expressed in folk belief as the opposition of the thunder (Perun) and the serpent (Veles) [S5]S5 · 19th-20th c. Slavic ethnographic collections (Volkov, Ivanov, etc.)19th-20th c.academic[S6]S6 · Modern comparative reconstruction (e.g., Ivanov & Toporov, 'Theses on Slavic Mythology')1970s-2000sacademic.
Pre-Christian Slavic religion left no native written corpus. Named gods are attested (Vladimir's pantheon, 980 CE; chronicles; ethnography), but the narrative layer is largely scholarly reconstruction (Ivanov–Toporov et al.). Every reconstructed claim is badged as such.
This is a scholarly reconstruction (Ivanov & Toporov), NOT a single attested Slavic myth. We present it explicitly as a reconstruction [S6]S6 · Modern comparative reconstruction (e.g., Ivanov & Toporov, 'Theses on Slavic Mythology')1970s-2000sacademic.