▁wood ▁at ▁the ▁back , ▁so ▁the ▁horse ▁can ▁easily ▁see ▁that ▁there ▁is ▁width ▁to ▁the ▁obst acle ▁and ▁therefore ▁judge ▁it ▁appropri ately . ▁ ▁T ables ▁can ▁get ▁extremely ▁wide , ▁and ▁generally ▁test ▁the ▁horse ' s ▁scope . ▁They ▁are ▁intended ▁to ▁be ▁jump ed ▁at ▁a ▁forward ▁pace ▁and ▁a ▁slightly ▁long ▁st ride . ▁ ▁Tra ke hner ▁ ▁These ▁f ences ▁consist ▁of ▁a ▁rail ▁over ▁a ▁d itch . ▁The ▁d itch ▁can ▁be ▁fright ening ▁for ▁the ▁horse , ▁and ▁so ▁this ▁type ▁of ▁jump ▁is ▁a ▁test ▁of ▁bra very . ▁Tra ke hn ers ▁are ▁first ▁seen ▁at ▁training ▁level ▁( Un ited ▁States ), ▁and ▁at ▁the ▁higher ▁levels ▁they ▁can ▁be ▁quite ▁large . ▁▁ ▁A ▁F aux ▁( False ) ▁Tra ke hner ▁is ▁a ▁mobile ▁cross - country ▁jump ▁designed ▁to ▁look ▁like ▁a ▁tra ke hner ▁by ▁using ▁heavy ▁posts ▁or ▁pol es ▁on ▁the ▁ground ▁to ▁simulate ▁the ▁front ▁and ▁back ▁edges ▁of ▁the ▁d itch . ▁ ▁Tra ke hn ers ▁were ▁originally ▁fen cel ines ▁that ▁were ▁built ▁in ▁d rain age ▁d itch es . ▁The ▁Tra ke hnen ▁area ▁of ▁East ▁Pr uss ia , ▁originally ▁wet lands , ▁was ▁dra ined ▁by ▁the ▁Pr uss ian ▁k ings ▁in ▁the ▁ 1 7 th ▁and ▁ 1 8 th ▁centuries , ▁before ▁a ▁horse ▁bre eding ▁program ▁was ▁begun . ▁The ▁Main ▁Stud ▁Tra ke hnen , ▁which ▁produced ▁the