▁ ▁M ish ima ▁on ▁Mys pace ▁ ▁Disc ography ▁and ▁lyr ics ▁ ▁Category : C atal an ▁musical ▁groups ▁Category : Ind ie ▁pop ▁groups <0x0A> </s> ▁T urt le ▁M ound ▁is ▁a ▁pre histor ic ▁arch ae ological ▁site ▁located ▁ ▁south ▁of ▁New ▁S my r na ▁Beach , ▁Florida , ▁on ▁State ▁Road ▁A 1 A . ▁On ▁September ▁ 2 9 , ▁ 1 9 7 0 , ▁it ▁was ▁added ▁to ▁the ▁U . S . ▁National ▁Register ▁of ▁Historic ▁Places . ▁It ▁is ▁the ▁largest ▁shell ▁m idden ▁on ▁the ▁main land ▁United ▁States , ▁with ▁an ▁approximate ▁height ▁of ▁. ▁The ▁m ound ▁extends ▁for ▁over ▁ ▁along ▁the ▁Indian ▁River ▁sh or eline ▁and ▁contains ▁over ▁ ▁of ▁shell s . ▁T urt le ▁M ound ▁was ▁estimated ▁to ▁be ▁ ▁high ▁before ▁it ▁was ▁reduced ▁by ▁shell rock ▁min ing ▁in ▁the ▁ 1 9 th ▁and ▁ 2 0 th ▁centuries . ▁ ▁The ▁t urt le - sh aped ▁m ound ▁contains ▁o yst ers ▁and ▁refuse ▁from ▁the ▁pre histor ic ▁Tim uc uan ▁people . ▁Arch ae olog ists ▁believe ▁that ▁these ▁people ▁may ▁have ▁used ▁this ▁site ▁as ▁a ▁high - ground ▁refuge ▁during ▁h urr ican es . ▁With ▁bow ▁and ▁arrow , ▁spe ars ▁and ▁sn ares , ▁they ▁caught ▁a ▁variety ▁of ▁small ▁m amm als ▁and ▁re pt iles . ▁It ▁was ▁constructed ▁between ▁ 8 0 0 ▁and ▁ 1 4