The signs referencing climate change were placed on tripods made of cedar, atop Cadillac Mountain in Acadia National Park, a popular destination for park visitors with sweeping views of the Atlantic Ocean.
They explained how climate change was affecting Acadia and noted rising sea levels and temperatures.
But some of those signs have been removed in recent days, according to the National Parks Conservation Association, an advocacy group, and Maine Rep. Chellie Pingree, a Democrat.
The removals are part of a nationwide review ordered by Interior Secretary Doug Burgum of signs, panels and displays that guide national park visitors at bookstores, museums and trails. Burgum — complying with President Donald Trump’s March executive order titled “Restoring Truth and Sanity to American History” — has mandated removal of descriptions that either cast a disparaging light on the country by focusing too much on “negative” history or that fail to emphasize the beauty and grandeur of public lands.