Among Mammut's arsenal of climbing ropes, the Crag Workhorse Dry Rope stands out as one of the more robust options. Best used for sport and trad applications, it's the skinniest Workhorse rope from Mammut, even though 9.9mm is considered fairly beefy in the entirety of climbing ropes. Mammut's Dry treatment excels UIAA's standards for abrasion-resistance as well as water-resistance, so this rope thrives in both desert and alpine environments. Mammut added a center mark to quicken rappel rigs.