lat: 51.2103622, lon: 3.2481278
| Key | Value |
| addr:housenumber | 130 |
| addr:street | Maalse Steenweg |
| charge | 13 EUR; 120 EUR/10 times; 165 EUR/3 months; 280 EUR/6 months; 525 EUR/year |
| climbing:boulder | yes |
| climbing:sport | no |
| climbing:toprope | no |
| drink | yes |
| drinking_water | yes |
| onyxboulder@gmail.com | |
| food | yes |
| leisure | sports_centre |
| opening_hours | Mo-Th 10:00-22:30; Fr 17:30-23:00; Sa 10:00-23:00; Su 10:00-20:00 |
| service:climbing_chalk_bag:rental | yes |
| service:climbing_chalk_bag:rental:charge | 3 EUR |
| service:climbing_shoes:rental | yes |
| service:climbing_shoes:rental:charge | 3 EUR |
| sport | climbing |
| start_date | 2025-04-11 |
| website | https://onyxboulder.com/ |