▁large , ▁falling ▁into ▁the ▁river . ▁The ▁entire ▁course ▁of ▁the ▁falls ▁is ▁longer ▁than ▁; ▁however ▁the ▁upper ▁cas c ades ▁cannot ▁be ▁observed ▁through ▁fl ora ▁that ▁covers ▁the ▁mountains ide . ▁The ▁bottom ▁ ▁is ▁a ▁straight ▁pl unge ▁into ▁the ▁river . ▁ ▁Et ym ology ▁The ▁water fall ▁is ▁named ▁for ▁the ▁prof usion ▁of ▁m oss ▁on ▁the ▁hill side ▁at ▁the ▁site , ▁together ▁with ▁bra e , ▁which ▁means ▁" a ▁ste ep ▁bank ▁or ▁hill side " ▁in ▁Irish ▁and ▁Sc ots . ▁ ▁Access ▁The ▁trail ▁to ▁the ▁falls ▁from ▁D uns mu ir ▁requires ▁tres pass ing ▁beside ▁the ▁Union ▁Pacific ▁rail road ▁tracks ▁for ▁, ▁before ▁the ▁water fall ▁appears ▁on ▁the ▁right ▁immediately ▁before ▁a ▁rail road ▁tr est le ▁that ▁cross es ▁the ▁river . ▁The ▁rail road ▁line ▁runs ▁in ▁a ▁cut ▁and ▁in ▁places ▁there ▁is ▁little ▁space ▁to ▁avoid ▁a ▁train ; ▁two ▁h ik ers ▁were ▁injured ▁by ▁trains ▁in ▁the ▁second ▁half ▁of ▁the ▁ 2 0 1 0 s . ▁The ▁city ▁of ▁D uns mu ir ▁closed ▁the ▁illegal ▁par king ▁area ▁in ▁the ▁Sh asta ▁Ret re at ▁neighborhood ▁in ▁ 2 0 1 1 , ▁and ▁has ▁since ▁built ▁most ▁of ▁an ▁extension ▁to ▁the ▁H edge ▁Creek ▁F alls ▁trail ▁that ▁when ▁finished ▁will ▁cross ▁the ▁river ▁on ▁a ▁ped est rian ▁bridge ▁ ▁from ▁the ▁falls , ▁but ▁requires ▁Union ▁Pacific ' s ▁permission ▁to ▁complete ▁it