Blockades to stop illegal occupation of parks in Stevenage have been put in place as a major traveller site faces closure.

The borough council has dumped dozens of piles of chalk, four foot high and six across, at access points to parks across the town, coinciding with the eviction of hundreds of travellers and gipsys from Dale Farm in Essex.

The council did not make a specific link between the closure of the site and its move to block access to parks, but said: “Stevenage Borough Council has inspected its green spaces and where it considers they are vulnerable to illegal occupation has put in chalk mounds, some of which may later be made permanent.”

A spokesman for neighbouring North Herts District Council said meetings had been held about the issue but no action had been taken on the ground.