Youtube activity of "mark duncan" (@markduncan6690) on "Spark" channel.

Commenter youtube id

UCHoYOBiS_XyHFMq2c3Zkt6A
User comments on "Spark" channel

4
Commenter name

mark duncan
Commenter name id

@markduncan6690
Comments by video

"NORAD - The US Military's Best Kept Secret | Behind The Wings [4K] | Spark"
"The Largest Natural Laboratory: Investigating The Wonder Of Antarctica | The White Desert"