This sign greeted us as we entered the canyon known as the mouth of the devil or la Boca del Infierno looking for Wallcreepers. Our base for this part of our journey was the Hotel Castillo de Acher, Siresa. Nellie was a wonderful hostess, and we enjoyed the food and ambiance of the hotel. Our time in the Boca proved to be quite an adventure. It was windy and cold with temperatures in the high 40's to low 50's. Luckily, Brad and I had bought gloves, heavy sweaters and hats to replace our cold weather clothing that was stolen in Valencia. We spent time before and after breakfast (brr!) at the Boca, then birded Selva De Osa, came back to the Boca before lunch, birded nearby Garbardito (another Wallcreeper site) after lunch, then headed back to the Boca for one last look before dinner. Finally, in the late afternoon sunlight, we spotted at least two Wallcreepers.