Altcoin season is the time when other cryptocurrencies like Ethereum, Solana, and others start to rise faster compared to Bitcoin. This means that people begin to invest in altcoins instead of Bitcoin. When Bitcoin's market influence diminishes and the prices of altcoins begin to rise, it is referred to as alt season. During this time, more people buy and sell these cryptocurrencies, which further increases their prices. In the past, when Bitcoin surged, shortly after, altcoins also saw significant gains. There are still some similar signs appearing, so many investors believe that a good time for altcoins may come soon. But remember, the crypto market is volatile, so it is important to make decisions wisely.