Do Moles Live in the Same Tunnels Year-Round?

Moles can use the same underground tunnels throughout the year, although they regularly extend, repair and abandon different sections of their networks. Some tunnels provide established routes between feeding areas, while others are temporary passages created as the mole searches for food.

The European mole (Talpa europaea), commonly found across much of the UK, spends almost its entire life underground. Moles do not hibernate, so their tunnel networks remain important during every season, even when there are no fresh molehills visible on the surface.

Do Moles Reuse Their Old Tunnels?

Yes, moles frequently reuse established tunnels, particularly deeper passages that connect important parts of their territory. These routes allow them to travel underground without constantly excavating new soil, saving valuable energy.

Moles primarily feed on earthworms and other soil-dwelling invertebrates. Earthworms can enter existing mole tunnels, allowing the mole to patrol its network in search of food. A productive tunnel may therefore remain useful for a considerable time.

However, not every tunnel receives the same amount of attention. Shallow feeding runs may be used briefly before the mole moves elsewhere, while deeper routes can form a more permanent part of its underground system.

Why Do Moles Dig New Tunnels?

Moles create new tunnels when they need to reach additional feeding areas or when existing routes become less productive. Soil moisture, temperature and earthworm availability all influence where they choose to dig.

Following rainfall, earthworms may become more active near the surface, encouraging moles to explore shallower soil. During dry or freezing conditions, feeding activity may shift deeper underground.

Moles may also extend their networks as they establish territories or investigate previously unused ground. This explains why fresh molehills can suddenly appear in a garden that has shown little visible activity for several weeks.

How Often Do Moles Create New Tunnels?

There is no fixed schedule for mole tunnelling. A mole may excavate several new passages over a short period when food is plentiful or when it is exploring a new area. At other times, it may spend much of its time travelling through established routes.

The amount of digging also depends on soil conditions. Moist, workable soil is generally easier to excavate than very dry, compacted or frozen ground.

A sudden increase in molehills does not necessarily mean several moles have arrived. One active mole can produce numerous mounds while extending or maintaining its tunnel system.

Do Moles Abandon Their Tunnels?

Yes, moles may stop using tunnels when they no longer provide access to suitable feeding areas. Shallow passages can gradually collapse or become blocked, particularly where the surrounding soil is disturbed.

Other tunnels may remain intact long after regular activity has stopped. These abandoned passages can sometimes be used by other small animals or occupied by another mole at a later date.

This is why finding an old tunnel beneath your lawn does not automatically mean a mole is still present. Fresh excavation, newly formed molehills and repeated disturbance are more useful indicators of current activity.

Can Another Mole Take Over an Existing Tunnel System?

Moles are generally solitary and territorial animals. Outside the breeding season, adults usually occupy their own territories and may behave aggressively towards other moles entering them.

However, a tunnel network does not necessarily become permanently unused when its original occupant disappears. Another mole may eventually move into the area and use some of the existing passages.

This can explain why mole activity sometimes returns to the same part of a garden after a previous problem appeared to have been resolved. The return of fresh molehills does not always mean the original animal is still present.

How Can You Tell if a Mole Tunnel Is Still Active?

Fresh molehills are one of the most obvious signs of recent excavation, although they do not identify which tunnels are currently being used.

An established feeding run may show little surface disturbance while the mole continues travelling through it. Where suitable, a suspected shallow run can be carefully compressed and checked later for signs of repair, but results are not always conclusive.

Professional mole control involves identifying the routes that are actively being used rather than relying solely on the location of old molehills. This is particularly important because a large tunnel network may contain several abandoned passages.

Do Moles Use Different Tunnels in Winter?

Moles continue using their tunnel networks throughout winter, but they may spend more time in deeper passages when the upper soil becomes frozen or unsuitable for feeding.

During milder weather, they can return to shallower areas where earthworms are available. This flexibility allows them to remain active without constructing an entirely new network each season.

Our guide on whether moles dig deeper tunnels during winter explains how colder weather affects their underground activity.

Need Help With Mole Activity in Your Garden?

If molehills keep appearing in the same part of your lawn, an established tunnel network may be allowing continued activity. Identifying the routes being used is an important part of determining the most appropriate control method.

Youngs Pest Control is a family-run business with over 35 years of experience, providing professional mole control across Greater Manchester, Cheshire and Merseyside.

If you’re experiencing persistent mole activity, contact Youngs Pest Control on 0161 776 9832 or 07845 815 261 for professional advice.