Rescuers search for 7 missing trekkers in Nepal

The search continued on Thursday for four South Korean climbers and three Nepali guides who disappeared after an avalanche last week on the Annapurna trekking trail

Snow and bad weather had stalled the rescue operation earlier in the week, but rescuers were digging through ice and snow and had made progress in determining their possible whereabouts, according to officials.

The trekkers and their guides are still listed as missing but mountaineering experts have said there is little chance they could have survived Friday's massive avalanche.

The avalanche hit part of the trekking route after heavy snowfall earlier in the week. All other trekkers who were in the area have been flown by helicopters to safe areas.

South Korea's Ministry of Foreign Affairs said earlier this week that the missing nationals were two women in their 30s and 50s and two men in their 50s, all teachers who were doing volunteer work in Nepal.