How long will it take for the transformation of the barren volcanic rock?

The transformation of barren volcanic rock into a more fertile environment can vary significantly depending on several factors, including climate, vegetation, and soil formation processes. Generally, it can take anywhere from a few decades to several centuries for the initial stages of soil development and ecosystem establishment to occur. However, full ecological recovery and the establishment of a mature ecosystem may take thousands of years. The presence of pioneer species and human intervention can accelerate this process.