The primary drainage, Step Canyon, is up to 200m deep. To its east is Loowit Canyon. Both canyons cut through 30m of solid rock. Creeks flow through each canyon.
Mfereji wa msingi wa Bonde la Step ni mita 200 kwenda chini. Mashariki yake ni Bonde la Loosit. Mabonde yote mawili hupitia kati ya mita 30 ya mwamba imara.