Throughout Zebes, you'll encounter ancient Chozo Statues. While some are part of the main progression (like the one that gives you the Morph Ball), others are optional and provide valuable information or even hidden power-ups. Some statues will simply point you in the direction of your next objective, while others might reveal secret passages or provide cryptic lore about the Chozo civilization.
Additionally, there are hidden Chozo Messages etched into walls in various locations. These messages provide backstory, hints, and sometimes even reveal the location of hidden items. To reveal these messages, you often need to use a Power Bomb in the correct spot. Exploring for these messages adds to the rich lore of the Metroid universe and can sometimes guide you to elusive collectibles.