At the turn of the century, the "Fourth Crossing" was considered one of Orange County's most picturesque locales.
The area was along Santiago Canyon Road, near what is today's Irvine Regional Park. As the road snaked down the canyon, travelers were treated to a beautiful forest of live oak trees, sycamores and wild grapes, according to the book "Historic Place Names in Orange County."
The trees and foliage gave way to two large rocks and the Santiago Creek. The area got its name because it marked the fourth time the road and the creek crossed.
The area disappeared in 1931 with the construction of Santiago Dam.
Irvine Valley College will dedicate the $4-million Hart Gymnasium before tonight's basketball game between the Irvine Valley College Lasers and the Saddleback College Gauchos.