Artem Rostovtsev, a guide of the 7 Summits Club:
Yesterday, a group of "Check and mate" (who called us?), all members stood on the top of Ojos Del Salado. All who went up, all got the summit. Nine persons, all together, in unison, not separately. Even some short period of acclimatization did not affect our movement to the top of the highest volcano in the world. By midnight we dropped all climbed 6900 m and have returned to Copiapo.
Best regards from Atacama!