The Beginning is a mod that adds a new dimension based around bedrock. It adds a way to craft bedrock blocks in order to construct a portal. The blocks can be crafted by first making hardened obsidian and then surrounding that with blocks of stone.
Then simply walk in and you’ll be transported to The Beginning. This new world is filled with “young” variants of stone and wood and ores. The colors are very striking with vast blue and purple blocks covering the land.