<ARTICLE>                     5
<LEGEND>

This  schedule  contains  summary  financial   information  extracted  from  the
consolidated   balance  sheet,   consolidated   statement  of  operations,   and
consolidated statement of cash flows included in the Company's Form 10-Q for the
period  ending March 31, 1997,  and is qualified in its entirety by reference to
such financial statements.

</LEGEND>
<MULTIPLIER>                                 1,000
       

                                            
<PERIOD-TYPE>                                3-MOS
<FISCAL-YEAR-END>                            Dec-31-1997
<PERIOD-START>                               Jan-01-1997
<PERIOD-END>                                 Mar-31-1997
<CASH>                                            32,292
<SECURITIES>                                      49,268
<RECEIVABLES>                                      3,506
<ALLOWANCES>                                           0
<INVENTORY>                                            0
<CURRENT-ASSETS>                                  46,933
<PP&E>                                            67,263
<DEPRECIATION>                                    30,743
<TOTAL-ASSETS>                                   130,927
<CURRENT-LIABILITIES>                             19,861
<BONDS>                                           30,146
<PREFERRED-MANDATORY>                                  0
<PREFERRED>                                            0
<COMMON>                                              37
<OTHER-SE>                                        80,883
<TOTAL-LIABILITY-AND-EQUITY>                     130,927
<SALES>                                            6,159
<TOTAL-REVENUES>                                   8,329
<CGS>                                              3,854
<TOTAL-COSTS>                                     20,627
<OTHER-EXPENSES>                                    (166)
<LOSS-PROVISION>                                       0
<INTEREST-EXPENSE>                                     0
<INCOME-PRETAX>                                  (12,132)
<INCOME-TAX>                                           0
<INCOME-CONTINUING>                              (12,132)
<DISCONTINUED>                                         0
<EXTRAORDINARY>                                        0
<CHANGES>                                              0
<NET-INCOME>                                           0
<EPS-PRIMARY>                                      (0.34)
<EPS-DILUTED>                                      (0.34)