SAN DIEGO -- The California Public Utilities Commission will hold a public hearing in Ramona on Tuesday to hear comments on a disputed proposal to run a 120-mile-long power line through rural parts of San Diego County.

San Diego Gas and Electric said the line is needed to provide an adequate supply of electricity to the region.

The line is opposed by several community groups as well as officials from the Center for Biological Diversity. They said the line will harm wildlife and forests.

Although an exact route has not been designated, it appears the line would start in Imperial County and cross the northern backcountry of San Diego County, affecting Anza-Borrego Desert State Park, the Cleveland National Forest and possibly the communities of Ranchita and Warner Springs.

The public hearing on the project will be held Tuesday at the Ramona Community Center on Aqua Lane at 2 p.m.

A meeting two weeks ago in Warner Springs attracted a large crowd, including many who said they were left out of the planning process.