The memorial wood was planted in 2010 and offers a peaceful space for reflection and remembrance.
Grieving parents have scattered the ashes of their children and placed tributes among the trees at the woodland area over the years.
A spokesperson for HS2 Ltd told The Bucks Herald: “In order to build Wendover’s green tunnel, which will reduce noise and disruption for the surrounding community, we unfortunately need to clear a section of woodland planted ten years ago by the Rennie Grove Hospice, which has since relocated out of the town.
“We informed the hospice and the landowner a month in advance, providing them with time to notify the families of the deceased who may have wanted to remove any fixed items before work starts.”
The new HS2 will pass through Buckinghamshire connecting London to Birmingham, with the intention of improving travelling times to the capital city from the Midlands.