Barranco Otín

verified Ungraded High flood risk Rodellar, Huesca

Big walls, big rappels, and Egyptian vultures: a 48 m drop hung above the first slot section, eight rappels in a habitually dry limestone canyon above Rodellar.

The Mar-Jun closure is a real bird-protection rule, not a paperwork formality. Authorization for that window must be requested in advance through the park (procedure documented at montanaregulada.org). Outside the window, treat it as a long technical day; carry installation gear if the previous winter was wet.

Logistics

Manager	Parque Natural de la Sierra y los Cañones de Guara
Permit	Advance written authorization required to descend between Mar 1 and Jun 30 (Egyptian vulture nesting season; vultures occupy ledges on the first major rappel). Outside that window, no permit required but standard group cap 8 and 10 minute spacing apply. Authorization request goes through the Aragón government tramite portal.
Distance	~4.0 with approach
Elevation	~787 ft loss
Time	5-7.5 hr
Technical	Ropewiki rates 4A III (v4a1 IV). Habitually dry but collects significant water after storms. 8 rappels max 148 ft with the longest single drop at 48 m. Large free-hanging rappels and significant pothole hazard. Limestone, parabolts and spits, installation gear recommended if recent flooding.
Season	Jul-Sep (closed without express authorization Mar 1 to Jun 30)
Flood risk	High. Normally dry, but a thunderstorm in the basin can fill it; the keeper potholes become the hazard.
Vehicle access	2WD to Rodellar, then 2 hr hike to the put-in
Crowd	Lighter than Mascun thanks to the long approach and the nesting closure
Coordinates	42.3108, -0.0745

Sources

authorization portal: https://www.aragon.es/tramitador/-/tramite/permiso-actividad-espacios-naturales-protegidos
authorization rule: https://www.rednaturaldearagon.com/que-normativa-debo-seguir-para-el-descenso-de-barrancos-en-guara/
park regulation: https://www.aragon.es/-/parque-natural-de-la-sierra-y-canones-de-guara
ropewiki: https://ropewiki.com/Otin