Minecraft: Underwater river in a mountain

So I was testing around with some mods in Minecraft... suddenly I ran into this...
I'm definitely going to add this to my own folder of wallpapers.
This is one of the bigger rivers I've seen the Streams mod create so far and besides one small branch this river is fully underground.
If I had to put a number on it I'd say 97% underground


Resourcepacks used in order (with creator):
-Dramatic Skys (thebaum64)
-Pixel Reality - Luminance (Wedhro)
-Default HD (thebaum64)

mods I know are responsible for this view and how:
-Better Foliage
        rounds the logs and makes the leaves look better, as the name suggests
-Realistic Terrain Generation
        creating the general terrain, not the underground river though
-Streams
        creating the underground river

All mods I used:
-(Chat) Ping!
        by TheSatanicSanta
-ArmmorStatusHUD
        by bspkrs
-Better Foliage
        by octarine_noise
-Buildcraft
        by CovertJaguar
-CodeChickenCore
        by chicken_bones
-CoFH Core
        by TeamCoFH
-Ding
        by iChun
-Et Futurum
        by ganymedes01
-Extra Achievements
        by dude22072
-Extra Utilities
        by RWTema
-Farseek
        by delvr
-Hats
        by iChun
-Hopper Ducts
        by FyberOptic
-iChunUtil
        by iChun
-Inventory Tweaks
        by Kobata
-Iron Chests
        by progwml6
-Iron Tanks
        by Indemnity83
-liteloader-1.7.10.jar
        (I'm sorry someone sent me the jar version of LiteLoader and idk where they got it)
-NEI Addons
        by bdew
-NEI Integration
        by tonius111
-NetherOres
        by skyboy026
-NotEnoughItems
        by chicken_bones
-Progression
        by joshiejack
-Realistic Terrain Generation
        by WhichOnesPink
-Redstone Paste
        by FiberOptic
-SmoothBedrock
        by Samtrion
-Sound Filters
        by Tmtravlr
-StatusEffectHUD
        by bspkrs
-Streams
        by delvr
-Torched
        by iChun
-Treecapitator
        by bspkrs
-VoxelMap
        by Mamiya0taru
-Waila
        by ProfMobius
-Waila Harvestability
        by squeek502