After 8 months of searching for this iconic mountain image, the seed to pack.png was finally found! Today, I'm going to show you how this feat was pulled off.
Seed: 3257840388504953787 (Alpha 1.2.2a - Can be generated up to Beta 1.7.3)
Coordinates: x=49, z=0
Pack.PNG Server:
IP: packpng.salc1.com (1.12.2 - 1.20.1)
Thanks so much to PebbleHost for originally hosting the server after the video's release!
Create your own server at: http://pebble.host/SalC1 (Affiliate Link)