There is a campsite near Veliko Tarnovo which is run by a rock climber. There is a climbing guide book in English.
The owner, Cliff Surtees can help with information about the route. Trinity Rocks Massif is a mile long and 240 feet hight/ 80 meters. Lime stone, well bolted with over 200 routes. Climbing from April till November.
Amazing family weekend with old steam engines, classic car displays, market stalls, and full catering and bar. And camping on site - Save £25 by booking in advance.