For more specific visual guides, you can refer to tutorials from Adobe Support or Photoshop Essentials . Deep Text Effect: Adobe Illustrator Tutorial
To create a "deep" or "sunken hole" text effect—commonly used in graphic design to make text appear as if it is carved into a surface—you can follow these professional methods in Adobe Illustrator or Photoshop. Adobe Illustrator (3D Sunken Effect)
: Add an Inner Shadow with a dark color to simulate depth inside the letters.