SYDNEY—Whole villages were flattened and water sources spoiled by a powerful earthquake that killed at least 20 people, residents said on Wednesday as rescuers struggled to reach the hardest-hit areas in Papua New Guinea’s remote, mountainous highlands.
The magnitude 7.5 quake rocked the rugged Southern Highlands province some 560 km (350 miles) northwest of the capital, Port Moresby, triggering landslides, damaging mining, gas and power infrastructure, and cutting communications.
