Cattle creep

A cattle creep is a small, field-to-field access for farm animals, usually to allow passage beneath an obstacle such as a road, canal, or railway embankment.

On Dartmoor, in south-west England, the term sheep creep is used to describe a purposely constructed gap in the base of a drystone wall, commonly topped with a granite lintel.

[1] Similarly in Cornwall small gaps are constructed in Cornish hedges to allow sheep to pass through to graze the cliff-tops.

In order to prevent sheep passing through the gap is covered using a large slab of slate.

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A cattle creep
A sheep creep