What rock is under a point, who owns the ground, and what the
law lets you pick up. Separately each answer is useless; together they are the
whole tool.
NOT LEGAL ADVICE. Every federal rule here was checked against
the statute or CFR section that governs it, and each carries its citation — but
local closures, special designations and state law override all of it, and land
status can be wrong at a boundary. Verify before you dig.