structures, and the Chugai Pictograph Cave that 
contains examples of ancient Chamorro rock art. 
Alaguan Bay Ancient Village is another latte stone 
prehistoric site that is surrounded by tall-canopy 
limestone forest. 
(5) In addition to prehistoric sites, the island of 
Rota boasts historic sites remaining from the Japa-
nese period (1914–1945). Several of these sites are 
on the National Register of Historic Places: Nanyo 
Kohatsu Kabushiki Kaisha Sugar Mill, Japanese 
Coastal Defense Gun, and the Japanese Hospital. 
(6) The island of Rota’s natural resources are 
significant because of the extent and intact condition 
of its native limestone forest that provides habitat 
for several federally endangered listed species, the 
Mariana crow, and the Rota bridled white-eye birds, 
that are also native to the island of Rota. Three en-
dangered plant species are also found on Rota and 
two are endemic to the island. 
(7) Because of the significant cultural and nat-
ural resources listed above, on September 2005, the 
National Park Service, Pacific West Region, com-
pleted a preliminary resource assessment on the is-
land of Rota, Commonwealth of the Northern Mar-
iana Islands, which determined that the ‘‘establish-
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ment of a unit of the national park system 
appear[ed] to be the best way to ensure the long 
term protection of Rota’s most important cultural 
resources and its best examples of its native lime-
stone forest.’’. 
SEC. 2. NPS STUDY OF SITES ON THE ISLAND OF ROTA, 
COMMONWEALTH OF THE NORTHERN MAR-
IANA ISLANDS. 
(a) STUDY.—The Secretary of the Interior shall— 
(1) carry out a study regarding the suitability 
and feasibility of designating prehistoric, historic, 
and limestone forest sites on the island of Rota, 
Commonwealth of the Northern Mariana Islands, as 
a unit of the National Park System; and 
(2) consider management alternatives for the is-
land of Rota, Commonwealth of the Northern Mar-
iana Islands. 
(b) STUDY PROCESS AND COMPLETION.—Except as 
provided by subsection (c) of this section, section 8(c) of 
Public Law 91–383 (16 U.S.C. 1a–5(c)) shall apply to the 
conduct and completion of the study required by this sec-
tion. 
(c) SUBMISSION
OF STUDY RESULTS.—Not later 
than 3 years after the date that funds are made available 
for this section, the Secretary shall submit to the Com-
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mittee on Natural Resources of the House of Representa-
tives and the Committee on Energy and Natural Re-
sources of the Senate a report describing the results of 
the study. 
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Union Calendar No. 111 
112TH CONGRESS 
1ST SESSION 
H. R. 1141 
[Report No. 112–167] 
A BILL 
To authorize the Secretary of the Interior to study 
the suitability and feasibility of designating pre-
historic, historic, and limestone forest sites on 
Rota, Commonwealth of the Northern Mariana 
Islands, as a unit of the National Park System. 
JULY 20, 2011 
Committed to the Committee of the Whole House on the 
State of the Union and ordered to be printed 
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