1. Barriers to flowing water
5. Secret agent
8. Refuse to acknowledge
12. Gemstone
13. Anagram of "Lodes"
15. Rail bird
16. Capital of Latvia
17. Angry
18. Finishes
19. Keeping in a certain state or condition
22. Prompt
23. Thick bituminous liquid
24. A quick run
26. Rouse
29. The act of detecting something
31. Increase in phase
32. Earthquake
34. Acclaim
36. Vipers
38. Slovenly people
40. A short ridge of glacial deposits
41. Corridors
43. Foe
45. Born
46. Lent
48. Responds
50. Celebrity
51. Beer
52. Traverse over snow
54. Tastes
61. Knowing a secret (2 words)
63. Leave out
64. Musical note
65. Part of a chromosome
66. Challenged
67. Relieves oneself from
68. Where a bird lives
69. Adult males
70. Grandson of Adam (Bible)
2. Capital of Western Samoa
3. Wise men
4. Angles
5. Spore-producing structures
6. Scheme
7. Abominable snowman
8. South southeast
9. Casual
10. A sanskrit language used in Pakistan and India
11. Military installation
13. Personal journals
14. Dispatches
21. Open-mouthed astonishment
25. Ill
26. Beginning rate
27. Detonations
28. Annoyed
29. A piece of hot glowing coal
30. Cripples
31. Panda
33. Male offspring
35. Golf-ball support
37. Thin strip of wood
39. Besmirched
44. An Ivy League school
47. Made a mistake
49. Middle (British spelling)
52. Informational panel or display
53. Leg joint
55. Ancient Middle-eastern kingdom
56. The process of combustion
57. Biblical garden
58. Metal money
59. Prefix indicating "Within"
60. Soap-frame bar
62. Mesh