Close by the luxury high-rises of Seoul's most expensive neighborhood, 80-year-old Kim Ok-nyo burns charcoal to heat her two-room shack in Guryong, a shantytown of 2,000 residents.

Demolition of Guryong, the last slum in Seoul's glitzy Gangnam district, is expected to start this summer after redevelopment plans were mired for years in squabbling among the city, district and developers, and even battling residents.

Left behind by South Korea's economic miracle, Guryong is a grim symbol of growing income inequality in a country where nearly half the elderly live in poverty.