NOT FOR DISTRIBUTION TO U.S. NEWS WIRE SERVICES OR DISSEMINATION IN THE UNITED
STATES.


Sentinel Rock Oil Inc. ("Sentinel Rock") (TSX VENTURE:SNT). Sentinel Rock, in
conjunction with its proposed business combination with Sundance Energy
Corporation ("Sundance"), announces that Sundance has commenced a 41 square
kilometre 3D seismic program on a portion of Sundance's land holdings in S.E.
Saskatchewan which comprise approximately 70,000 net acres. The new 3D seismic
program is designed to evaluate and confirm structures already identified on
Sundance's proprietary licensed 2D and 3D data set comprised of 163 square
kilometres of 3D and 436 kilometres of 2D seismic data.


From the existing geology and seismic data base Sundance has identified
structures in the Second White Specks, Shaunavon, Torquay and Bakken formations.
Sundance's lands where the current 3D program is being shot are located
approximately 40 kilometres north and west of the Rocanville producing Bakken
oil field and 29 kilometres north and west of the Wapella producing Shaunavon
oil field.


It is anticipated that the new 3D seismic program will be completed by the end
of March with processed and interpreted data available by May 2011. Drilling by
Sundance of the first 2 Test Wells on its S.E. Saskatchewan lands will commence
before August 2011.


Refer to Sentinel Rock's news releases dated January 26, 2011, February 8, 2011
and February 15, 2011 for additional details regarding the proposed business
combination.


READER ADVISORY 

Completion of the Proposed Transaction is subject to a number of conditions,
including but not limited to, final acceptance by the TSX Venture Exchange and,
if applicable pursuant to the requirements of the Exchange, shareholder
approval. Where applicable, the Proposed Transaction cannot close until the
required shareholder approval is obtained. There can be no assurance that the
Proposed Transaction will be completed as proposed or at all.


Investors are cautioned that, except as disclosed in the filing statement or
management information circular to be prepared in connection with the Proposed
Transaction, any information released or received with respect to the Proposed
Transaction may not be accurate or complete and should not be relied upon.
Trading in the securities of Sentinel Rock should be considered highly
speculative.


Forward-Looking Statements 

This news release contains forward-looking statements and forward-looking
information within the meaning of applicable securities laws. The use of any of
the words "expect", "anticipate", "continue", "estimate", "objective",
"ongoing", "may", "will", "project", "should", "believe", "plans", "intends" and
similar expressions are intended to identify forward-looking information or
statements. More particularly and without limitation, this news release contains
forward looking statements and information concerning Sentinel Rock's future
operations and prospects. The forward-looking statements and information are
based on certain key expectations and assumptions made by Sentinel Rock,
including expectations and assumptions concerning equipment and crew
availability and financial capability. Although Sentinel Rock believes that the
expectations and assumptions on which such forward-looking statements and
information are based are reasonable, undue reliance should not be placed on the
forward looking statements and information because Sentinel Rock can give no
assurance that they will prove to be correct. By its nature, such
forward-looking information is subject to various risks and uncertainties, which
could cause Sentinel Rock's actual results and experience to differ materially
from the anticipated results or expectations expressed. These risks and
uncertainties, include, but are not limited to reservoir performance, labour,
equipment and material costs, access to capital markets, interest and currency
exchange rates, political and economic conditions. Readers are cautioned not to
place undue reliance on this forward-looking information, which is given as of
the date it is expressed in this news release or otherwise, and to not use
future-oriented information or financial outlooks for anything other than their
intended purpose. Sentinel Rock undertakes no obligation to update publicly or
revise any forward-looking information, whether as a result of new information,
future events or otherwise, except as required by law.


The TSX Venture Exchange Inc. has in no way passed upon the merits of the
Proposed Transaction and has neither approved nor disapproved of the contents of
this press release.


The securities of the Corporation have not been, nor will be, registered under
the United States Securities Act of 1933, as amended, and may not be offered or
sold within the United States or to, or for the account or benefit of, U.S.
persons absent U.S. registration or an applicable exemption from U.S.
registration requirements. This release does not constitute an offer for sale of
securities in the United States.


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