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Ballast pits are former ballast and gravel quarries. When they were no longer in use, the site became a natural area offering a wide variety of plants that change with the seasons.
At the entrance (or exit) to Aire sur la Lys, in any case to the north, there is a small paradise reclaimed from a former ballast extraction site and transformed into a 20-hectare nature reserve. The site has been carefully restored to allow nature to express itself fully, whatever the season.
Located to the...
At the entrance (or exit) to Aire sur la Lys, in any case to the north, there is a small paradise reclaimed from a former ballast extraction site and transformed into a 20-hectare nature reserve. The site has been carefully restored to allow nature to express itself fully, whatever the season.
Located to the...
Rates
Adult price
From 3€
Special reduced rate
From 1.50€
Free
From 0€



Opening times
On 5 April 2025
- 14:30 at 16:30
On 16 April 2025
- 14:30 at 16:30
On 7 May 2025
- 14:30 at 16:30
Each wednesday from 28 May 2025 until 4 June 2025
- 14:30 at 16:30
On 18 June 2025
- 14:30 at 16:30