Previous research found that critical thinking skills of students need to be trained more intensively using authentic problems in daily life. Critical thinking can be developed through problem-based learning as a pedagogical approach in an aligned learning and teaching context. This research aims to obtain the profile of students' critical thinking skills through authentic problems, the damage to the Citatah karst environment. Learning activities are carried out using a Problem Based Learning (PBL) model. The sample used was 25 people of 7th grade students of SMP Krida Utama Padalarang. This type of research is descriptive qualitative research. The indicators of critical thinking skills measured in this study are: formulating problems, asking HOTS questions, arguing, observing and choosing sources of information, determining actions and communicating. Based on data analysis and discussion, it can be concluded that on all indicators of critical thinking skills, most students are in the moderate category or need assist to stimulate their critical thinking skills. [For the complete proceedings, see ED655360.]