Petrosul (1,848 m) is a striking peak in the northwestern part of the Chornohora massif in the Ukrainian Carpathians — and one that rewards a closer look. Sitting just north of the better-known Petros, it forms a natural waypoint on the classic route from Yasinia and surprises visitors with its dramatic asymmetry.

The mountain has a split personality: the southwestern slopes are gently rolling, carpeted with sphagnum-rhododendron communities and blueberry meadows, while the northeastern face drops away in an abrupt rocky escarpment nearly 50 metres high. The bedrock is sandstone, and the crags are colonised by hardy petrophytes that cling to every crack and ledge. In summer the summit offers wide views across Chornohora; in winter and early spring the northeastern cliff becomes a genuinely serious obstacle with ice and snow cornices.

• Yasinia (Ясіня) — the trail toward Petros passes directly over Petrosul; moderate to demanding difficulty depending on season

• Petrosul is located in Ukraine (Zakarpattia Oblast, Rakhiv district) — a valid passport and compliance with Ukrainian national park entry regulations are required.
• The northeastern rocky escarpment drops roughly 50 m — keep well clear of the edge, especially in wet or icy conditions.

What makes Petrosul quietly special is exactly that asymmetry — stand on the gentle grassy south side and it feels like an easy highland stroll; step toward the north and the mountain suddenly reveals its wilder, more serious face.