Humus (Layer O)
The organic layer at the very top, made of decomposed leaves and organic material. It's rich in nutrients and holds moisture like a sponge.
Unearth the Secrets Below!
Explore the fascinating world beneath your feet.
Journey through the hidden layers of soil.
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Hint : Drag the slider to see the layers' journey.
What's Inside a typical soil block ?
Topsoil: Zone of Biological Activity
Surface Litter & Organic Matter
Indicators of Soil Health
Water Infiltration & Leaching Zone
Soil Fertility & Ecosystem Services
Subsoil: Mineral Accumulation
Parent Material: Source of Minerals
Surface Vegetation Reduces Erosion
Nutrient Reservoir for Plant Growth
The 5 Layers:
Each layer holds a different secret. Scroll down or use the navigation to begin the investigation.
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Soil Layer Descriptions
Topsoil (Layer A)
The "Zone of Life." This dark, rich layer is where most roots grow and where billions of organisms like earthworms and fungi live.
Subsoil (Layer B)
A lighter-colored layer rich in minerals that have washed down from above. It's tougher and contains less organic matter than topsoil.
Parent Material (Layer C)
Large rocks and weathered material. There is very little organic life here, as it's the foundation upon which soil forms.
Bedrock (Layer R)
The solid rock foundation that lies beneath everything. It is the unweathered rock that serves as the base of the soil profile.
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Web of Life
Click any node to explore • Drag nodes to rearrange
Soil Layers
🔬 FIELD ANALYSIS
Title
Group
Description
Element Profile
Influence
impact on ecosystem
Abundance
how common in soil
Resilience
ability to persist
Did You Know?
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Connected To
Your Expedition is Complete! 
You've explored the hidden world beneath your feet. Test your knowledge or see how you did:
You have :
• Scrolled through 200+ images •
• Explored 15+ custom 3D models with 10+ animations •
Powered by 10,000+ lines of code
All compressed into just ~4MB (smaller than 2 HD photos!)
Thank You ❤
This project wouldn't exist without these incredible resources and people.
Three.js Journey
Where I'm learning to bring ideas to life in 3D.
Bruno Simon's course is pure magic.
GSAP
The animation library that makes everything feel alive and buttery smooth.
Creative Coding Club
Where I master the art of GSAP and creative coding. Carl's lessons are truly world-class!
Blender
Free, open-source, and absolutely incredible. Every 3D model here was made with care in Blender.
SVG Repo
Beautiful icons that made this project visually complete. You're amazing!
USDA & NIH
All the fascinating soil data and research that made this educational journey possible.
Sketchfab
The stylized dinosaur bones fossil model that brings the bedrock layer to life.
