ELOCHOMAN RIVER VALLEY, Washington — Investment companies have whittled away the land hunters can use in Wahkiakum and Pacific counties. Access to tens of thousands of acres of longtime hunting grounds is now blocked because a new generation of private landowners won’t offer access. The landowners are often investment companies, not based in the region or even the country. Not only is hunting off limits on their lands, they also often block access to adjacent properties that are state-owned — and therefore should be public — or adjacent privately owned property that still allows free hunting. Steve Ogden, an assistant manager for land operations at Washington Department of Natural Resources, said the agency’s hands are tied — private landowners can’t be forced to allow people on their land. The companies’ land restrictions have begun to erase generations-old family traditions, especially among the working class, and reduce access to affordable foods, like elk, in Washington’s second-poorest county.