Written by Abigail Fraeman, Curiosity Deputy Project Scientist
Earth planning date: Friday, Feb. 13, 2026
Curiosity spent this week at Gale crater completing the last few activities associated with the “Nevado Sajama 2” drill before kicking off our final phase of the boxwork exploration campaign. As we’ve explored the boxwork region, the science team has divided up our activities into four phases:
Phase 1: First approach (sols 4534-4570 / May through June 2025) — This phase focused on making initial observations of the boxwork unit, which culminated in the team’s decision to drill at the Altadena location.
Phase 2: Establish regional context (sols 4571-4599 / June through July 2025) — During this time, we collected additional observations of the boxwork unit between the Altadena drill location and arrival at the “main” boxwork area. This included stopping at the distinctive “Volcán Peña Blanca” feature.
Phase 3: Exploration of the best expressed boxwork structures (sols 4600-4805 / July 2025 to February 2026) — This period was the heart of the boxwork campaign. During phase 3, we collected lots of observations of the most well-defined ridges and hollows within the boxwork unit, and we used what we learned to select locations where we wanted to drill a hollow and ridge. We selected targets named “Valle de la Luna” and “Nevado Sajama,” respectively.
Phase 4: Our final look (sols 4805- ??? / February 2026 and beyond) — We’re kicking off this phase now, which will focus on some last measurements of ridges and hollows as well as an exploration of the contacts between the boxwork unit and adjacent geologic units to the east a …