This is the newly-created Civilization series introducing Fluvial-North America HDRI maps.
It shows human settlements around fresh water, rivers and lakes.
It's a series of 24 new maps rendered in 4k, 8k and 16k at 6 different times of day (Dawn to Sunset) and 4 different altitudes (6,000 feet to 33,000 feet):
https://dreamcatcherhdri.artstation.com/store
About DreamCatcherHDRI:
We have more than 25 years of experience in the CGI field including a decade in the aeronautical and aerospatial industry (Dassault Aviation, Swiss Space Systems, Airbus Helicopters, Safran).
<< 360° HDRI Map >>
Camera Altitude: 2,000 m / 6,000 feet
Time of day: Sunrise
Cloud Layer1: Small Cumulus
Cloud Layer2: Cirrostratus
Sun brightness: 15.52 EV
https://www.artstation.com/a/31417610
<< 360° HDRI Map >>
Camera Altitude: 4,000 m / 12,000 feet
Time of day: Midday
Cloud Layer1: Small Cumulus
Cloud Layer2: Cirrostratus
Sun brightness: 16.37 EV
https://www.artstation.com/a/31417618
<< 360° HDRI Map >>
Camera Altitude: 2,000 m / 6,000 feet
Time of day: Dawn
Cloud Layer1: Small Cumulus
Cloud Layer2: Cirrostratus
Sun brightness: 13.48 EV
https://www.artstation.com/a/31417609
<< 360° HDRI Map >>
Camera Altitude: 2,000 m / 6,000 feet
Time of day: Afternoon
Cloud Layer1: Small Cumulus
Cloud Layer2: Cirrostratus
Sun brightness: 16.31 EV
https://www.artstation.com/a/31417613
<< 360° HDRI Map >>
Camera Altitude: 10,000 m / 33,000 feet
Time of day: Dawn
Cloud Layer1: Small Cumulus
Cloud Layer2: Cirrostratus
Sun brightness: 13.60 EV
https://www.artstation.com/a/31417627
<< 360° HDRI Map >>
Camera Altitude: 4,000 m / 12,000 feet
Time of day: Morning
Cloud Layer1: Small Cumulus
Cloud Layer2: Cirrostratus
Sun brightness: 16.21 EV
https://www.artstation.com/a/31417617
<< 360° HDRI Map >>
Camera Altitude: 6,000 m / 18,000 feet
Time of day: Sunrise
Cloud Layer1: Small Cumulus
Cloud Layer2: Cirrostratus
Sun brightness: 15.99 EV
https://www.artstation.com/a/31417622
<< 360° HDRI Map >>
Camera Altitude: 10,000 m / 33,000 feet
Time of day: Afternoon
Cloud Layer1: Small Cumulus
Cloud Layer2: Cirrostratus
Sun brightness: 16.26 EV
https://www.artstation.com/a/31417631
<< 360° HDRI Map >>
Camera Altitude: 2,000 m / 6,000 feet
Time of day: Sunset
Cloud Layer1: Small Cumulus
Cloud Layer2: Cirrostratus
Sun brightness: 15.44 EV
https://www.artstation.com/a/31417614
<< 360° HDRI Map >>
Camera Altitude: 6,000 m / 18,000 feet
Time of day: Midday
Cloud Layer1: Small Cumulus
Cloud Layer2: Cirrostratus
Sun brightness: 16.41 EV
https://www.artstation.com/a/31417624
<< 360° HDRI Map >>
Camera Altitude: 10,000 m / 33,000 feet
Time of day: Sunset
Cloud Layer1: Small Cumulus
Cloud Layer2: Cirrostratus
Sun brightness: 16.02 EV
https://www.artstation.com/a/31417632
<< 360° HDRI Map >>
Camera Altitude: 6,000 m / 18,000 feet
Time of day: Morning
Cloud Layer1: Small Cumulus
Cloud Layer2: Cirrostratus
Sun brightness: 16.41 EV
https://www.artstation.com/a/31417623