An Act to amend the act establishing the Indiana Dunes National Lakeshore to provide for the expansion of the lakeshore, and for other purposes.

[AI summary unavailable — showing source text] Expands the boundaries of the Indiana Dunes National Lakeshore. Repeals provisions suspending the Secretary of the Interior's authority to acquire property within the National Lakeshore by condemnation when appropriate zoning agencies have in effect approved valid zoning ordinances applicable to such property. Revises provisions regarding retention of the right of use and occupancy by owners of improved property after such property has been acquired by the Secretary. Increases the membership of the Indiana Dunes National Lakeshore Advisory Commission. Authorizes the appropriation of sums for acquisition of lands and interests in land and for development. Requires the Secretary to complete by the end of 1977 a final master plan detailing the development of the lakeshore. Details guidelines regarding rights-of-way and easements added by this Act to the lakeshore and regarding the acquisition, improvement, and use of specified lands and easements not within the expanded boundaries.…