 The High Kings have completed their first US tour in almost two years, including dates in New York and Chicago.On 9 October Holden was one of seven Irish celebrities to spend a week in Tanzania while climbing Mount Kilimanjaro in aid of Our Lady's Children's Hospital, Crumlin.Other big names on the climb were TV presenters Sile Seoige and Kathryn Thomas, radio personalities Ruth Scott and Jenny Buckley and comedians Karl Spain and Alan Shortt.