Nature designed equine hooves to resist high impacts. This high-resolution micro-computed tomography image illustrates the tubular canals with intersecting bridges in three dimensions in an equine hoof wall. These intricate porous sub-structures, micrometers in cross-section, were imaged using an X5000 NSI High-Resolution Micro-CT and rendered in Imaris at the Carl R. Woese Institute at the Genomic Biology Core Facility.