What is "inholding"

Inhold \In*hold"\, v. t. [imp. & p. p. Inheld; p. pr. & vb. n. Inholding.] To have inherent; to contain in itself; to possess. [Obs.]
--Sir W. Raleigh.

n. A piece of privately-owned land inside the boundary of a national park, national forest, state park, or similar publicly-owned protected are

1. v

2. (present participle of inhold English)

An inholding is privately owned land inside the boundary of a national park, national forest, state park, or similar publicly owned, protected area. In-holdings result from private ownership of lands predating the designation of the park or forest area, or the expansion of the park area to encompass the privately owned property. In the United States, the main causes of inholdings is that all of the Federal land-management agencies were formed over a century after the government sold and issued land grants to private citizens to fund the administration of the United States. When the park system was formed, many of these now-called "in-holdings" had been in private ownership for generations and not available for sale when the park was formed. Over the last several decades, conservation groups have lobbied the United States Congress to acquire private residences especially within designated wilderness areas, either by direct purchase or via land exchange which trades the inholding for other federal lands located outside of national parks or wilderness areas.