Ronov is a striking, cone-shaped basalt hill rising above the western edge of the Ralská Hills, instantly recognizable from afar. Crowning its summit are the ruins of a medieval castle, while its slopes hide rare boulder fields and scree forests — a rewarding mix of history and untamed nature.

Once a volcanic conduit made of nepheline basanite, Ronov's rugged terrain today is shaped by steep scree slopes overgrown with sycamore, giving way higher up to oak-hornbeam forest. In late spring the hill bursts with a large population of martagon lilies, and among the rocks you might spot the rare smooth snake. The atmosphere of a crumbling hilltop fortress combined with sweeping views makes this a memorable stop in any season.

• Stvolínky or Blíževedly — red-marked trail with a signposted turnoff to the summit, moderate difficulty
• Kravaře — green-marked trail skirting the eastern side of the hill toward the hamlet of Stranné near Blíževedly

• The summit and slopes are protected as the Ronov Nature Monument, declared in 1995, part of the Ronov – Vlhošť Natura 2000 site
• The area lies within the Kokořínsko – Máchův kraj Protected Landscape Area
• The nearest train stop is Kravaře, on the Lovosice – Česká Lípa line, about 1.2 km from the base of the hill

Among the scree slopes lives the rare beetle Leistus montanus and an endemic earthworm species — small details that make Ronov just as fascinating for naturalists as for castle enthusiasts.