Rockcliff Resources Inc. ("Rockcliff") (TSX VENTURE:RCR) (Tier 1) is pleased to
announce that it has earned a 100% interest in the Rail Property in Snow Lake,
Manitoba. 


Pursuant to an option agreement with Hudson Bay Exploration and Development
Company Limited ("HBED"), a wholly owned subsidiary of HudBay Minerals Inc.
(TSX:HBM), Rockcliff was required to pay an aggregate of $370,000 cash and
exploration expenditures totalling $1,600,000 over a five year period in order
to earn a 100% interest in the Rail Property. Once the cash and expenditure
requirements are completed, HBED then has a right to earn back up to a 65%
interest in the Rail Property. As previously announced, HBED and Rockcliff have
entered into an amending agreement, pursuant to which HBED has agreed to accept
2,727,273 common shares of Rockcliff valued at $0.099 per share in lieu of the
final cash option payment of $270,000 due to HBED pursuant to the option
agreement. The common shares are subject to a hold period ending on July 17,
2012.


HBED and Rockcliff closed the transactions contemplated by the amending
agreement yesterday. Accordingly, Rockcliff has now earned its 100% undivided
interest in the Rail Property and HBED holds a 2% Net Smelter Return Royalty in
the Rail Property and has the right to earn back up to a 65% interest in the
Rail Property. For further information, please see the Press Releases dated
March 23, 2007 and March 9, 2012.


The Rail Property presently hosts the Rail Deposit, a National Instrument (NI)
43-101 Indicated Resource rich in copper, gold, zinc and silver (please see
Press Release dated December 21, 2010). The deposit remains open in all
directions. The Rail Deposit Report prepared by SRK (Consulting) Canada is
available for viewing on www.sedar.com and the Resource is detailed below.


The Mineral Resource Statement for the Rail Deposit is reported at a cut-off
grade of 2.0 percent copper. The table below includes metal grade for copper,
zinc, gold and silver but not lead because this metal is present at near
detection limits. 


Table 1: Mineral Resource Statement(i), Rail Polymetallic Sulphide Deposit,
Manitoba, SRK Consulting, November 4, 2010




----------------------------------------------------------------------------
                                               Grade                        
                           Quantity     Cu     Zn     Au     Ag    Contained
Resource Category          (tonnes)    (%)    (%)  (g/t)  (g/t)  Cu (pounds)
----------------------------------------------------------------------------
Indicated                   822,000   3.04   0.90   0.66   9.25   55,090,000
Inferred                          -      -      -      -      -            -
----------------------------------------------------------------------------
(i)  Reported at a cut-off grade of 2.0 percent copper. Cut-off grade is    
     based on copper price of US$3.00 per pound and a metallurgical recovery
     of eighty percent, without considering revenues from other metals. All 
     figures rounded to reflect the relative accuracy of the estimates.     
     Mineral resources are not mineral reserves and do not have demonstrated
     economic viability.                                                    



The mineral resources are reported at a cut-off grade of 2.0 per cent copper to
reflect "the reasonable prospects" for economic extraction. SRK considers the
Rail Deposit to be amenable to extraction using underground mining methods. The
Mineral Resources Statement for the Rail Deposit presented in Table 1 are not
mineral reserves and do not have demonstrated economic viability. There is no
certainty that all or any part of the mineral resources will be converted into
mineral reserves. The Indicated Mineral Resource for the Rail Deposit was
classified according to the CIM Definition Standards for Mineral Resources and
Mineral Reserves (December 2005).


Rockcliff Resources Inc. 

Rockcliff Resources Inc. is a Canadian resource exploration company focused on
discovery and advancement of its high-quality mineral assets at its Snow Lake
Project. Rockcliff presently controls the Snow Lake Project totalling in excess
of 500 km2. The project includes one copper rich NI43-101 Indicated Resource
(Rail), two former copper rich VMS Mines (Spruce Point and Dickstone), one
historic VMS copper deposit (Lon) and the Tower Copper Deposit. Rockcliff also
controls a zinc-silver rich NI43-101 Indicated Resource (Shihan) and a portfolio
of precious metal assets including one former gold mine (Century Mine) and one
surface gold deposit (C-Zone) in Manitoba and the Black Gold Property in
Ontario. 


Ken Lapierre P.Geo., President and CEO of Rockcliff Resources Inc. is a
Qualified Person in accordance with Canadian regulatory requirements as set out
in NI 43-101, and is responsible for the information in this press release.


For more information please visit our website at www.rockcliffresources.com.

Forward Looking Statement:

Some of the statements contained herein may be forward-looking statements which
involve known and unknown risks and uncertainties. Without limitation,
statements regarding potential mineralization and resources, exploration
results, and future plans and objectives of the Company are forward looking
statements that involve various risks. The following are important factors that
could cause the Company's actual results to differ materially from those
expressed or implied by such forward looking statements: changes in the world
wide price of mineral commodities, general market conditions, risks inherent in
mineral exploration, risks associated with development, construction and mining
operations, the uncertainty of future profitability and the uncertainty of
access to additional capital. There can be no assurance that forward-looking
statements will prove to be accurate as actual results and future events may
differ materially from those anticipated in such statements. Rockcliff
undertakes no obligation to update such forward-looking statements if
circumstances or management's estimates or opinions should change. The reader is
cautioned not to place undue reliance on such forward-looking statements.