Based on your description of a tall, light-colored rock protruding from the ground and rising above the surrounding trees, it sounds like you are describing a type of geological formation known as a "monolith" or "rock spire." Common types of rock that can fit this description include:
- Granite - Often light-colored and known for its strength and formations such as El Capitan in Yosemite.
- Limestone or Dolostone - Can also have light colors and form distinctive towers or spires, commonly seen in karst landscapes.
- Sandstone - Light-colored sandstone formations can also appear as prominent monoliths, like the formations seen in places such as Monument Valley.
If more specific details about the rock's texture, location, or other features are provided, I could give a more accurate identification.