As the ground shook from a 5.2-magnitude earthquake, a herd of elephants at the San Diego Zoo Safari Park sprang into action to protect their young. A video shot of their enclosure at the park Monday morning shows the five African elephants standing around in the morning sun before the camera shakes and they run in different directions. Then the older elephants — Ndlula, Umngani, Khosi — scramble to encircle and shield the two 7-year-old calves Zuli and Mkhaya from any possible threats. They remain huddled for several minutes as the older elephants look outward, appearing to be at the ready, their ears spread and flapping — even after the rocking stopped. The quake was felt from San Diego to Los Angeles, 120 miles (193 kilometers) away. It sent boulders tumbling onto rural roads in San Diego County and knocked items off store shelves in the tiny mountain town of Julian near the epicenter but caused no injuries or major damage. But it spooked the elephants. About an hour later, when an aftershock hit, they briefly huddled again and then dispersed once they determined everyone was safe.