UNITED NATIONS — Making a dramatic statement in Korean relations, Gloria Steinem and other prominent women on Wednesday announced their intention to walk across the demilitarized zone between North and South Korea to call for reunification.

The DMZ is the world’s most fortified border, with the two countries still technically at war. Hundreds of thousands of soldiers face off across the heavily mined zone.

Organizers of the effort called WomenCrossDMZ.org on Wednesday said they hope for 30 women, including two Nobel Peace laureates, to cross from North Korea to South Korea on May 24, which is International Women’s Day for Disarmament.

The walk also marks the 70th anniversary of the division of the Korean Peninsula.

The women say they are still seeking approval from both countries and the United Nations. Kim Song, a diplomat with North Korea’s mission to the U.N., said that the proposal “is under the discussion in my capital.” There was no immediate response from the U.N.

“It’s hard to imagine any more physical symbol of the insanity of dividing human beings,” said Steinem, a longtime advocate for women who has visited the South Korean side of the DMZ. “To me, to walk across it has huge, huge, huge importance.”

The women said they also soon will launch an online petition calling on U.N. Secretary-General Ban Ki-moon, a South Korean, as well as President Barack Obama and the leaders of North and South Korea to take the necessary actions to finally end the Korean War with a peace treaty. The war ended in 1953 with the armistice.

The DMZ is one of the most highly charged places in the world. When Pope Francis last year held a mass on his visit to South Korea, Seoul Cardinal Andrew Yeom Soo-jung dedicated a “crown of thorns” to the pope made from its barbed wire.

The women would not say how or whether they would go ahead with the march, from either side, if permission from either North or South Korea does not come. They said they take heart from successful crossings of the DMZ by five New Zealanders with motorbikes in 2013 and by 32 Korean Russians by motorcade last year. Both had permission from both sides.

This new attempt includes Nobel peace laureates Mairead Maguire of Northern Ireland and Leymah Gbowee of Liberia, who worked to end those long-running conflicts.