The Tomb of the Scythian Prince (2000)

The Scythians, skilled horsemen and nomadic conquerors, built a feared empire in the vast Eurasian steppe between the 9th and 3rd centuries B.C. All that remains are their graves: the Kourganes. In April 1999, a 2400 year-old Scythian tomb was discovered in Kazakhstan. It contained, among other treasures, twelve horses completely harnessed in gold, suggesting high social status.

Unfortunately the movie The Tomb of the Scythian Prince is not yet available on HBO Max.