Navigate deep, winding cave systems without constantly stopping to illuminate your path.
Are you playing or on a specific multiplayer server ? fullbright 1.12.2 mod
At its core, Fullbright is a "quality of life" mod that pushes the game’s gamma settings beyond the standard limits. While the vanilla "Bright" setting only goes so far, Fullbright acts as a permanent night-vision potion. It removes shadows and illuminates every corner of the world, making it look as though the sun is always directly overhead, even in the deepest caves. Why Version 1.12.2? fullbright 1.12.2 mod
If you cannot install mods, you can achieve the exact same effect by modifying your game configuration files. Close Minecraft completely. fullbright 1.12.2 mod