The Slavic cosmos is three-layered: the Sky (Nebo) above, the Earth (Zemlya) in the middle, and the Underworld (Nav/Cherd) below. A world-axis (the world-tree, the 'axis mundi') connects the three layers. The Sky is the realm of Nebo and Perun; the Earth is the realm of the human world and the earth-gods; the Underworld is the realm of the dead (Nav/Cherd) and Veles [S4]S4 · Vsevolod Miller, 'Slavic God-Concepts' (Slavjanskije bozhestvennye predstavl'enija)1860 (19th c. ethnographic)academic[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.
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.
In the reconstructed seasonal cycle, Jarilo (spring/youth) and Morana (winter/death) are in opposition. The cycle is expressed in folk ritual: the 'drowning of Marzanna' (the winter-goddess) in spring, and the 'Kupala' night (the midsummer fire-and-water festival) in the height of summer [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. The 'spring kills winter, summer peaks, winter returns' is the reconstructed annual cycle [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.
The 'Kupala' night (the midsummer solstice, around June 23/24) is a well-attested folk fire-and-water festival across Slavic lands: bonfires are lit, people leap over the fire, the 'Kupala' flower (the fern-flower) is sought, and the water is blessed [S5]S5 · 19th-20th c. Slavic ethnographic collections (Volkov, Ivanov, etc.)19th-20th c.academic. The 'Kupala' is associated with Jarilo (the spring/youth/sun god), though the relationship is debated [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.
In 980 CE, the pagan ruler Vladimir of Kiev (later baptized as Vladimir) ordered the destruction of the pagan idols. The great wooden idol of Perun (with a golden head and beard) was dragged from its hill by the Dnieper, beaten, and thrown into the river [S1]S1 · Primary Chronicle (Povest' vremennykh let / Latopis povest' vremen'nykh let)c. 1113 CE (describes 10th c.)textOpen source ↗[S3]S3 · 'Tale of the Destruction of the Idols' (Skazanie o razrushenii idolov)16th-18th c.textOpen source ↗. This is the oldest attested event in the Slavic pantheon's history — the moment of the Christianization of Kiev [S1]S1 · Primary Chronicle (Povest' vremennykh let / Latopis povest' vremen'nykh let)c. 1113 CE (describes 10th c.)textOpen source ↗[S3]S3 · 'Tale of the Destruction of the Idols' (Skazanie o razrushenii idolov)16th-18th c.textOpen source ↗. The 'Tale of the Destruction of the Idols' (a later retelling) describes the event in detail [S3]S3 · 'Tale of the Destruction of the Idols' (Skazanie o razrushenii idolov)16th-18th c.textOpen source ↗.
The Slavic Cosmology (the three-layered world)
The Sky (Nebo)
The highest heaven, the realm of Nebo and Perun [S4]S4 · Vsevolod Miller, 'Slavic God-Concepts' (Slavjanskije bozhestvennye predstavl'enija)1860 (19th c. ethnographic)academic[S5]S5 · 19th-20th c. Slavic ethnographic collections (Volkov, Ivanov, etc.)19th-20th c.academic.
The Earth (Zemlya)
The human world, the realm of the earth-gods [S4]S4 · Vsevolod Miller, 'Slavic God-Concepts' (Slavjanskije bozhestvennye predstavl'enija)1860 (19th c. ethnographic)academic[S5]S5 · 19th-20th c. Slavic ethnographic collections (Volkov, Ivanov, etc.)19th-20th c.academic.
The Underworld (Nav/Cherd)
The realm of the dead, the domain of Veles and Cherd [S4]S4 · Vsevolod Miller, 'Slavic God-Concepts' (Slavjanskije bozhestvennye predstavl'enija)1860 (19th c. ethnographic)academic[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.
The World-Axis
The world-tree (the 'axis mundi') connects the three layers [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.
Sources: [S4] [S5] [S6]
The Perun-Veles Conflict (reconstructed)
The Sky-Thunder (Perun)
Perun, the thunder-god, the sky-father [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.
The Underworld-Serpent (Veles)
Veles, the serpent-god, the underworld-god [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.
The Opposition
The thunder (Perun) vs. the serpent (Veles) — the reconstructed duality [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.
Sources: [S5] [S6]
The Seasonal Cycle (Jarilo vs. Morana, reconstructed)
Winter (Morana)
Morana, the winter/death goddess, rules the cold season [S5]S5 · 19th-20th c. Slavic ethnographic collections (Volkov, Ivanov, etc.)19th-20th c.academic.
The Drowning of Marzanna
In spring, an effigy of the winter-goddess is drowned to 'kill' winter [S5]S5 · 19th-20th c. Slavic ethnographic collections (Volkov, Ivanov, etc.)19th-20th c.academic.
The Kupala Night
At midsummer, the 'Kupala' fire-and-water festival (Jarilo's peak) [S5]S5 · 19th-20th c. Slavic ethnographic collections (Volkov, Ivanov, etc.)19th-20th c.academic.
The Return of Winter
Morana returns; the cycle repeats [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.
Sources: [S5] [S6]
The Kupala Night (the midsummer fire-and-water festival)
The Bonfires
Great bonfires are lit on the Kupala night [S5]S5 · 19th-20th c. Slavic ethnographic collections (Volkov, Ivanov, etc.)19th-20th c.academic.
Leaping the Fire
People leap over the fire (a rite of purification) [S5]S5 · 19th-20th c. Slavic ethnographic collections (Volkov, Ivanov, etc.)19th-20th c.academic.
The Fern-Flower
The 'Kupala' flower (the fern-flower) is sought (a rare, magical bloom) [S5]S5 · 19th-20th c. Slavic ethnographic collections (Volkov, Ivanov, etc.)19th-20th c.academic.
The Water
The water is blessed; the 'Kupala' water is collected [S5]S5 · 19th-20th c. Slavic ethnographic collections (Volkov, Ivanov, etc.)19th-20th c.academic.
Sources: [S5]
The Destruction of the Idols at Kiev (980 CE)
The Pagan Kiev
The pagan idols stand on the hill by the Dnieper; Perun is the head [S1]S1 · Primary Chronicle (Povest' vremennykh let / Latopis povest' vremen'nykh let)c. 1113 CE (describes 10th c.)textOpen source ↗.
Vladimir's Decision
Vladimir (influenced by the 'ambassador' episode) chooses Christianity [S1]S1 · Primary Chronicle (Povest' vremennykh let / Latopis povest' vremen'nykh let)c. 1113 CE (describes 10th c.)textOpen source ↗.
The Destruction
The idols are dragged into the river; Perun is beaten and drowned [S1]S1 · Primary Chronicle (Povest' vremennykh let / Latopis povest' vremen'nykh let)c. 1113 CE (describes 10th c.)textOpen source ↗[S3]S3 · 'Tale of the Destruction of the Idols' (Skazanie o razrushenii idolov)16th-18th c.textOpen source ↗.
The Christianization
Kiev is baptized; the pagan pantheon is destroyed [S1]S1 · Primary Chronicle (Povest' vremennykh let / Latopis povest' vremen'nykh let)c. 1113 CE (describes 10th c.)textOpen source ↗.
Sources: [S1] [S3]