Creating sculptures with intricate undercutting requires wood that is both workable and durable. The best woods for this purpose combine fine grain, stability, and resistance to splitting. Here are the top choices for detailed wood carving:

1. Basswood: Known for its softness and uniform texture, basswood is ideal for beginners and experts alike. It carves smoothly, allowing for delicate undercuts without excessive chipping.

2. Mahogany: With its medium density and interlocking grain, mahogany holds fine details well. Its reddish-brown hue adds a rich finish, making it popular for artistic sculptures.

3. Walnut: A harder wood with a striking dark color, walnut is perfect for intricate designs. Its strength ensures longevity, though it requires sharp tools for precise undercutting.

4. Butternut: Similar to basswood but slightly harder, butternut offers excellent workability for detailed carvings. Its light brown tone is aesthetically pleasing for finished pieces.

5. Lime Wood: A European favorite, lime wood is soft yet stable, making it a top choice for intricate relief carvings and undercutting.

For best results, use sharp tools and work slowly to preserve fine details. Each wood type offers unique advantages, so choose based on your project’s needs and skill level.