Italian Hans Kammerlander and American Jordan Romero have both achieved personal dreams, Kammerlander becoming the first to climb all the second highest summits on each of the continents, while Romero became the youngest "Seven Summiteer".
In early January Kammerlander made only the fifth ascent of Tyree (4,852m) in the Sentinel Range of Antarctica, climbing in the company of Austrians Robert Miller and Christian Stangl.
Whilst it's not clear when or where the original idea of Second Seven Summits was muted, Jon Kraukauer, discussing the Seven Summits fascination in his best seller, Into Thin Air, notes that climbing the second highest peaks would provide a much greater challenge.
Kammerlander climbed K2 in 2001 but only decided to focus on the Second Seven Summits in 2009. That year he climbed Ojas del Salado in Chile (6,893m) and Kenya (5,199m). In 2010 came 5,959m Logan in the Canadian Yukon and Dych Tau (5,204m) in Russia. In 2011 it was the turn of Puncak Trikora (4,730m), the second highest peak in Australasia.
The second highest in Australasia/Oceania still seems to be a question of debate. Nggu Pulu is often quoted as the second highest summit, but it is more a subsidiary top to Carstensz Pyramid than an independent mountain. However, another school of thought suggests Puncak Mandala, a separate peak, has a higher altitude than Trikora.
Tyree was first climbed in January 1967 by Barry Corbet and John Evans via a committing traverse over Gardiner, during the American expedition that made the first ascent of the continent's highest mountain, Vinson.
The second came in 1989 when Mugs Stump made his now legendary solo ascent of the west face, totally raising the bar in Antarctic mountaineering.
In 1997 French Antoine de Choudens and Antoine Cayrel climbed the east face for the third ascent. This line was repeated not long after by Conrad Anker and Alex Lowe.
While the route Kammerlander and partners took to the summit is currently not known for certain, it is most likely to be via the great ice slope of the east face.
In 2008 and 2009 Stangl, who is also on a quest to complete the Second Seven, had tried Tyree. On the second attempt, via the French Route on the east face, he was within shouting distance of the summit when a single falling rock broke his partner's arm, causing the pair to bail.
Kammerlander has climbed 13 of the 8,000ers, but is quoted as saying he has no intention of returning to Manaslu, in order to complete the collection, because he lost friends there early in his climbing career.
Stangl's aim is now to climb the Triple Seven Summits: the first, second and third highest mountains on each continent.
Jordan Romero (born July 1996) climbed Kilimanjaro aged 10 and by the time he was 13 had climbed six of the Seven Summits. His ascent of Everest from the north in 2010 made him the youngest to have stood on top.
With the experienced American guide Scott Wollums, his father Paul, and his stepmother Karen Lundgren, Romero reached the summit of Vinson on Xmas Eve.
Romero now wants to use his profile to inspire a healthy lifestyle amongst American children with a Healthy Eating Challenge; "I've been able to push my body and mind to the summits of all these mountains, because I put good fuel in my body".
Prior to Romero summiting Vinson, the youngest person to have climbed the Seven Summits was the 16-year-old George Atkinson from the UK