Subterranean Root-Cellar Inspired Earth-Sheltered Seed Bunker

Construct a reinforced cedar box that serves as the main seed reservoir, ensuring all joints are waterproofed with marine-grade sealant. The interior is designed with a sloped bottom to encourage gravity-fed seed distribution to the external tray.

Apply a thick coating of non-toxic, weather-resistant bitumen to the exterior base and sides to simulate soil insulation. Once dried, embed gravel and river stones into the surface to create a naturalistic, earth-sheltered texture.

Fabricate a miniature heavy-duty wooden hatch cover that hinges upward, allowing for easy refilling of the bunker. This hatch features a custom brass locking mechanism to prevent squirrels from accessing the seed supply.

Install an integrated cedar-shingled roof canopy over the protruding front porch to protect the feeding area from rain and snow. Complete the build by mounting the unit at a low angle to blend seamlessly into a garden bed or mound.