Obstacle is correct.
Obstacle
The likely word is hurdle (to jump, or an obstacle).
The correct spelling is obstacle.An example sentence is "the obstacle slowed down the traffic".
The correct spelling is "obstacle" (hindrance; obstruction).
The correct spelling of the plural noun is "difficulties" (an obstacle).
The correct spelling is obstacle (a blockade, impediment, or metaphorically a difficulty).
Helen's teacher faced the greatest obstacle of trying to communicate with Helen, who was deaf and blind. This presented a significant challenge in trying to teach Helen language and concepts when there was no established means of communication with her.
learning her own peoples language
find the thing
The correct spelling of the noun is "obstacle" (impediment, blockage).Similar is the adjective obstetrical (medical, pertaining to pregnancy and labor).
1000 Feet
Zipline, walking through woods, arts and crafts, obsticle courses