▁the ▁University ▁Park ▁sub div ision ▁peer ▁down ▁upon ▁the ▁H eller ▁R anch ▁from ▁Austin ▁Bl uff s . ▁ ▁At ▁the ▁end ▁of ▁a ▁ 6 0 - year ▁res iden cy , ▁the ▁Hell ers ▁be que athed ▁their ▁ran ch land ▁with ▁the ▁architecture ▁and ▁art ▁collection ▁to ▁the ▁University , ▁for ▁use ▁as ▁a ▁nature ▁preserve ▁to ▁support ▁local ▁arts ▁and ▁human ities ▁education . ▁Geography ▁field ▁study ▁classes ▁are ▁held ▁at ▁the ▁H eller ▁R anch ▁in ▁its ▁E agle ▁Rock ▁setting . ▁Stud ents ▁eng age ▁in ▁birds ong - list ening , ▁wild flow er ▁identification , ▁and ▁d end ro - chron ological ▁investig ations . ▁E agle ▁Rock ▁offers ▁data ▁about ▁the ▁region ' s ▁ge ological ▁events . ▁ ▁Form ▁and ▁setting ▁Sand stone ▁pal is ades ▁of ▁h ood oo ▁rib s ▁er upt ▁into ▁stack ed ▁terra ces , ▁up ▁to ▁six - layers ▁high , ▁inter mitt ently ▁situated ▁across ▁the ▁northern ▁wall ▁commanded ▁by ▁E agle ▁Rock ▁and ▁the ▁neighbor ing ▁P ulp it ▁Rock . ▁Its ▁high ▁white ▁stone ▁columns ▁are ▁easily ▁visible ▁from ▁Highway ▁I - 2 5 . ▁In ▁a ▁wed ding - ca ke ▁array , ▁E agle ▁Rock ' s ▁three ▁ste ep ▁stone ▁terra ces ▁step ▁down ▁the ▁hill side . ▁Each ▁grey ▁stone ▁terra ce ▁maintain s ▁its ▁hold ▁against ▁weather ing ▁er os ion , ▁where ▁strength ened ▁by ▁a ▁top ▁str atum ▁composed ▁of ▁a ▁more ▁resist ant ▁sed