Complex sentence: As recently as the summer of 2012, tombs are still discovered at various locations, such as the January 2007 unearthing of a timber tomb of a blond chieftain warrior that was unearthed in the permafrost of the Altai mountains region close to the Mongolian border.
Split into simpler sentences: As recently as the summer of 2012, tombs are still discovered at various locations. In January 2007 a timber tomb of a blond chieftain warrior was unearthed in the permafrost of the Altai mountains region close to the Mongolian border.